・Example of consumer product camera fixtures
The following is part of LPL Co., Ltd.’s catalog.
・Example of industrial camera fixture
The following is part of SFC Co., Ltd.’s catalog.
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・Example of consumer product camera fixtures
The following is part of LPL Co., Ltd.’s catalog.
・Example of industrial camera fixture
The following is part of SFC Co., Ltd.’s catalog.
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Cameras and lenses don’t have to be left everywhere, they need to be stored properly and correctly.
If it is not stored correctly, it may cause problems such as dust contamination and mold formation.
In this article, we will introduce how to store cameras and lenses.
The inside of cupboards, drawers, and desks are places where dust and mold are likely to form. The same is true even if you have it in your camera bag. In general, the humidity suitable for storing cameras and lenses is about 40-50%. If the humidity exceeds 60%, mold is likely to grow, and conversely, an environment with extremely low humidity is also undesirable.
Therefore, it is important to maintain the right humidity.
You should also pay attention to temperature differences, as sudden changes in temperature can cause condensation.
~ Dry box (moisture-proof cabinet) ~
Moisture-proof storage manufacturer Toyo Living Co., Ltd.’s HP |
~Simple dry box or sealed container~
Simple dry box is easy and popular.
It is a sealed moisture-proof case provided by camera accessory manufacturers, etc., and it is possible to control humidity by putting a desiccant inside and placing a simple hygrometer.
It is easy to use because even beginners can easily store cameras and lenses. Recently, it is also possible to substitute airtight containers for food with rubber seals on the lid, which are available at 100 yen shops and home centers.
It is cost-effective and protects against moisture and dust, but requires regular humidity checks and desiccant replacement.
Simple dry boxes and airtight containers for food should be filled with desiccant to reduce humidity.
You can also substitute a commercially available desiccant for dry boxes or silica gel for food.
Be sure to include a desiccant and a hygrometer to check the humidity.
Cameras and lenses that have been used may have dust on them.
Properly clean it before storing.
It doesn’t make sense to bring dirt in when storing cameras and lenses in an enclosed space.
Use a blower provided by a camera accessory manufacturer to blow away dust and fine particles from the camera and lens.
Carefully wipe off dirt and oil on the surface with a cleaning cloth.
Sweat and oil on your hands can lead to mold growth, so wipe them off thoroughly.
It is a question of whether or not to remove the lens from the camera when storing it, but it is okay to store it with the lens attached.
Rather, by reducing the number of times the lens is attached and detached, the risk of dust contamination can be reduced.
However, if you are going to remove the lens, it is important to attach the cap to the camera’s lens mount and store it.
The camera sensor is bare and facing the top, and dust falls on the sensor inside the camera. | |
The C-mount part of the lens is exposed and facing the top, and dust falls on the lens. | |
The side of the lens object is bare and facing the top, and dust falls on the lens. |
When you buy a camera or lens, it may come with a cap (lid).
Installing the cap as soon as possible reduces the risk of dust contamination.
When changing the lens, it may be temporarily placed on the desk, but care must be taken when doing so.
Make sure that the surface of the sensor or lens is not facing up, and that it is placed sideways to prevent dust from adhering to it.
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・The camera and lens are sensitive to dust and moisture.
・If dust or mold gets into the camera or lens, it will be difficult to remove. Therefore, it is important to store it in an environment where dust and mold do not form.
・To prevent dust and mold from forming, store it in a special case.
・Before storing, take good care of the camera and lens and do not bring in dust, dirt, or grease.
・There is no problem even if the lens is attached.
・Caution must be taken when temporarily storing or replacing lenses.
When using a USB camera, there is also a software option to apply digital zoom, but this may come at the expense of resolution.
For example, if you use a 2 million pixel camera at full resolution, the resolution will be 1600×1200.
2倍のリアコンバータ | |
Dimmable even when lighting independently in 4 parts!
With a removable diffuser plate!
● Inner diameter φ70mm, tip inner diameter φ60mm, outer φ96mm
● 4 divisions can be lit independently
● Dimmable even when lighting independently in 4 divisions
● Diffuser plate can be removed
● Can be attached to microscopes, microscopes,…
With removable diffuser plate!
High luminance type with 80 lamps arranged in two lines
●Inner diameter φ70mm, tip inner diameter φ60mm, outer diameter φ96mm
●With removable diffuser plate.
●Separate control box. Convenient for dimming at hand.
●Can be attached to microscopes, microscopes, etc.
●Robust metal body for efficient heat dissipation
Below are the upper and lower limit adjustment stays for our camera stands.
The adjustment stay of our camera stand has the following structure. |
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27mm pitch |
The following is a lens that we manufactured according to the customer’s lens size. We can also accommodate such requests. |
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The tip is fixed with a 27mm pitch M3 screw. | |
A 5.5Kg base is attached to a post and horizontal bar.
The base acts as a weight, so the horizontal bar is stable even if it is long.
Horizontal bars on edge-fixed posts
■Windows environment
■Linux environment
When using a lens with the same magnification, the smaller the number of inches in the image size, the larger the magnification and the narrower the field of view.
Take a look at the pictures below.
The lens, monitor, and focal length are taken under the same conditions.
1/2 inch camera
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1/2.5 inch camera
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1/3 inch camera
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You can see that the 1/3 inch camera has a narrower field of view than the 1/2 inch camera.
Also, when selecting a lens, it is necessary to check the compatible image sensor size of the camera.
Please note that if you select a lens that is smaller than the camera’s compatible image sensor size, a phenomenon called vignetting may occur.
You can see black areas (vignetting) in the four corners of the screen. |
What is gamma adjustment?
1.The color contrast is adjustable.
2.It can reduce reflections and blackouts. (HDR-like video effects)
Number of pixels: 20 million pixels (resolution 5472×3648)
Pixel size: 2.4μm×2.4μm
Sensor Size: 1 inch
Shutter method: Rolling shutter
The IMX226 has a pixel size of 1.85×1.85 μm and uses a rolling shutter method.
SONY’s Pregius series is characterized by high sensitivity and low noise performance. The sensor is 1/1.7″ in size and is available with standard and affordable 2/3″ C-mount lenses.
Number of pixels: 12 million pixels (resolution 4000×3036)
Pixel size: 1.85μm×1.85μm
Sensor size: 1/1.7 inch
Shutter method: Rolling shutter
Includes a polarizing filter to reduce halation!
The IMX178 is a rolling shutter sensor with a pixel size of 2.4×2.4 μm.
SONY’s Starvis series supports high sensitivity even in low-light environments by increasing the gain. The sensor has a resolution of 6 million pixels, a size of 1/1.8 inch, and a wide dynamic range, making it suitable for a variety of applications.
Number of pixels: 6 million pixels (resolution 3072 x 2048)
Pixel size: 2.4×2.4µm
Sensor size: 1/1.8 inch
Shutter method: Rolling shutter method
GigE camera (6 million pixels, color) EG600U-C
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GigE camera (6 million pixels, monochrome) EG600U-B
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The IMX264 has a pixel size of 3.45×3.45 μm and the sensor uses a global shutter method. The Pregius series manufactured by SONY is characterized by high sensitivity and low noise performance. This sensor is 2/3 inch in size, has a wide dynamic range, and has a resolution of 5 million pixels, making it suitable for a variety of applications.
Number of pixels: 5 million pixels (resolution: 2448 x 2048)
Pixel size: 3.45×3.45µm
Sensor size: 2/3 inch
Shutter method: Global shutter
GigE camera (Sony 5 million pixels, color) EG501-C
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GigE camera (Sony 5 million pixels, monochrome) EG500-B
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At this price, it can be used overseas with double LED arrangement and light intensity increase 100 ~ 240V.
● Control box separate type. It is convenient because it can be dimmed at hand.
● Diffusion plate is standard equipment
● 56 LEDs are double-arranged to increase the amount of light
● Can be attached to microscopes, microscopes,…
● The body is a robust metal case. Good heat dissipation efficiency
Many industrial cameras have external trigger terminals.
USB Camera DN Series | USB Camera CS Series |
This trigger pin is used to control the timing of still image shooting and video recording with a sensor or PLC (programmable logic controller).
Watch the video brief image below.
Of course, even if you don’t use an external trigger, you can use the included application software to save still images and record videos.
However, in actual production lines, it is common to shoot and record at the timing of the object to be photographed, and there are many situations where an external trigger terminal of an industrial camera is required.
Watch the video brief image below.
When using external trigger terminals, there are various ways to use them depending on the customer’s production line.
In addition to simply saving still images and recording videos, it can be used for a variety of purposes, such as recording videos before and after a problem occurs, or shooting and recording with multiple cameras.
Therefore, when using an external trigger pin, it is basically assumed that the customer will program it himself.
Industrial cameras usually come with an SDK (Software Development Kit) for development, which is used to create programs.
I mentioned that “basically create a program”, but if it is a simple function, application software can be used.
By using it, you can build a system without any knowledge of programming.
Among them, we will explain the most basic “saving still images with an external trigger”.
Even with the simple function of “saving one still image when an external trigger signal is input”, there are two main methods.
And the time display between the trigger and the next trigger is different.
(1) A still image taken with the latest trigger is displayed between the trigger and the next trigger.
・Saved images can be reliably checked in real time.
Even lines with movement can be visually checked using still images.
・When shooting with multiple cameras at the same time, it is possible to shoot perfectly in sync.
We offer the following software:
Trigger Shooting Software Hi TriggerF Light |
High-performance trigger shooting software Hi TriggerF Pro |
(2) A method is adopted in which live video is displayed between the trigger and the next trigger.
・Since the live image is always displayed, it is possible to monitor the status of lines other than the object.
・When shooting with multiple cameras at the same time, multiple frames may be out of alignment.
We offer the following software:
Four-screen display shooting software Hi TriggerQ |
In the case of video recording, there are the following two types.
(1) Use the start trigger and stop trigger as triggers
(2) Use only the start trigger as a trigger
In the case of (1), only a simple recording function is provided.
In the case of (2), various functions are available.
In addition to simply recording the specified time by timer control from the trigger, you can also record before and after the trigger (operation like a drive recorder). It is useful for event analysis when a problem occurs.
We offer video recording software that allows you to use both Start/Stop triggers, timers, etc.
Long-Duration Recording Software Hi TriggerRec |
Software to record video before and after the trigger
Facility monitoring drive recorder Hi TriggerWatcher |
A 5.5Kg base is attached to a post and horizontal bar.
The base acts as a weight, so the horizontal bar is stable even if it is long.
Horizontal bars on edge-fixed posts
We introduce a small camera stand that is convenient for carrying around.
Before assembly, it looks like the following.
The following image is shown when the borescope camera system is installed.
We can also manufacture custom stands to meet your needs.
The pixel size of this IMX265 is 3.45 x 3.45μm, and it is a global shutter type sensor.
Sony’s Pregius series is known for its high sensitivity and low noise.
The resolution is 3.2 million pixels and the sensor size is 1/1.8 inch, so there are many lens options. It can be said that this model has a good balance between image quality and frame rate (speed).
Number of pixels: 3.2 million pixels (resolution: 2048 x 1536)
Pixel size: 3.45×3.45µm
Sensor size: 1/1.8 inch
Shutter method: Global shutter method
GigE camera (Sony 3.2 million pixels, color) EG320-C |
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GigE camera (Sony 3.2 million pixels, monochrome) EG320-B |
Number of pixels: 400,000 pixels (resolution 720 x 540)
Pixel size: 6.9×6.9μm
Sensor size: 1/2.9 inch
Shutter method: Global shutter method
According to USB cable standards, the maximum connection distance between devices is usually 5 meters. However, by using this “USB cable with repeater function”, you can connect devices with a cable longer than 5m. The product in the photo can be extended up to 12m using this cable.
This cable has a built-in signal amplification correction circuit. This circuit compensates for signal attenuation and allows cable extension. This cable can be extended over 12m. In that case, wire as shown below.
If you want to use multiple cameras, you need a high-performance PC. (The use of laptops is not guaranteed.) In general, as the resolution and number of cameras increase, so do the required specifications of the PC. The following are recommended specs, but this is a guide.
・CPU: 12th generation or later Intel Core i7 (12th generation or later Intel Core i9 is recommended for 4 or more cameras)
・RAM: 16 GB or more
If you’re recording for a long time, add the above specs to a GPU like the RTX 3070.
If you have more than 4 cameras, we recommend adding a USB board or a LAN board for GigE cameras to account for bandwidth limitations. To add a board, the required PCIe slot must be free.
Also, the amount of storage space you need depends on your camera’s resolution, fps, and recording time. The following is an estimate of the storage time that can be stored on each camera when using 1TB of storage.
1TB SSD
400,000 pixels 30fps | Compression | 160h |
Non – compression | 6h45min | |
1.3 million pixels 30fps | Compression | 48h |
Non – compression | 2h | |
5 million pixels 30fps | Compression | 11h |
Non – compression | 28min |
※If there are 2 cameras, the time will be 1/2, and if there are 4 cameras, the time will be 1/4. When performing compressed recording, it may be possible to secure sufficient writing speed with an HDD depending on the number of cameras and fps.
When recording with multiple cameras at the same time, there may be a deviation of several frames between cameras due to factors such as camera clock and component deviations, aging, and the ambient temperature at which they are used.
Due to the complex interplay of these factors, it is difficult to give a specific amount of deviation, but as a general guideline, if you record for more than 8 hours, there may be a deviation of about 1 to 2 seconds.
Synchronous recording is a method that completely eliminates the above deviations and makes recordings without deviations. Synchronous recording uses not only a camera, but also a synchronous signal generator.
Multiple cameras are fed into the signal from the synchronous signal generator at exactly the same time, and only the frame at the time when the signal is entered is recorded, resulting in perfectly synchronized recording and not being affected by the camera clock or environment.
Due to space constraints, it may be necessary to configure the camera and lens in a compact manner.
In such cases, compactness can be achieved by choosing an S-mount lens that is smaller than a C-mount or CS-mount lens.
In order to use S-mount lenses, you need to attach a conversion adapter to the camera.
However, there is a caveat.
With S-mount lenses, the focus is adjusted depending on how well it is inserted into the camera.
Cameras usually have an infrared cut filter or a protective filter in front of the sensor.
In some cameras, the distance between the filter and the lens mount is close, and the lens may interfere with the filter when focusing, resulting in a lack of focus.
It is necessary to actually try and check whether the S-mount lens can be attached and used with the camera.
When using the same lens, the smaller the size of the image sensor, the narrower the field of view. In addition, the size of the image sensor is a necessary factor in the calculation of the field of view and the selection of the lens. (More on this later.)
The size of a single pixel can also be calculated from the size of the image sensor
For example, if the image sensor size of 1.3 million pixels (1280 dots × 1024 dots) is 1/2.5 inch, the horizontal orientation is 5.6 mm and the vertical direction is 4.2 mm.
In this case
Horizontal 5.6mm/1280dot=0.0044mm/dot
Vertical direction is 4.2 mm/1024 dot = 0.0041 mm/dot.
4:3 horizontal and vertical image sensor
19:6 horizontal and vertical image sensor
When choosing a lens or calculating the distance to an object, the size of the image sensor is required.
The following factors are required to calculate the required lens based on the size of the object: the size of the camera’s image sensor and the distance to the object (W.D.).
For example, if the distance to the object is 1 meter and the vertical field of view is 300 mm, what focal length lens should you choose? (Let’s assume we use a 1/2 inch camera).
The image sensor size of a 1/2 inch camera is as follows.
Focal length (f) = (distance to object (mm) x vertical size of image sensor (mm)) / vertical field of view = (1000mm x 4.8mm) / 300mm = 16mm
Therefore, choosing a lens with a focal length of 16mm will ensure the desired vertical field of view. Horizontal field of view can be calculated similarly.
Note that once you know the vertical or horizontal field of view, you can easily calculate the other field of view. A square image sensor has an aspect ratio of 4:3, so in the above case, the horizontal field of view is 300mm x 4/3 = 400mm.
Lenses that magnify objects often have a fixed focal length.
In this case, the characteristics of the lens cannot be expressed by the focal length (f value).
In the case of microlenses, performance is expressed in terms of optical magnification.
With a lens with an optical magnification of 1x, the field of view you want to observe matches the size of the image sensor.
For example, the size of a 1/3 inch image sensor is 4.8 mm x 3.6 mm, and the size of a 1/2 inch image sensor is 6.4 mm x 4.8 mm. We would appreciate it if you could check the specifications of our macro lenses based on this information.
USB camera CS series | USB camera DN series | GigE camera | |
1/1.1 inch |
CS1200-GC (12 million pixels, color)/ CS1200-GB (12 million pixels, monochrome) |
EG1200-GC (12 million pixels, color)/ EG1200-GB (12 million pixels, monochrome) |
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1/1.7 inch |
CS1200-C (12 million pixels, color)/ CS1200-B (12 million pixels, monochrome) |
EG1200-C (12 million pixels, color)/ EG1200-B (12 million pixels, monochrome) |
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1/1.8 inch |
DN3RG-130 (1.3 million pixels, color)/ DN3RG-200 (2 million pixels, color)/ |
EG320-C (3.2 million pixels, color)/ EG320-B (3.2 million pixels, monochrome) EG600U-C (6 million pixels, color)/ EG600U-B (6 million pixels, monochrome) |
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1/2.3 inch | DN3R-1000 (10 million pixels, color) | ||
1/2.5 inch | CS500-C (5 million pixels, color)/ CS500-B (5 million pixels, monochrome) |
DN3R-500 (5 million pixels, color) | |
1/2.9 inch |
CS41-C (400,000 pixels, color)/ CS41-B (400,000 pixels, monochrome) |
EG41-C (400,000 pixels, color)/ EG41-B (400,000 pixels, monochrome) |
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1/2 inch |
CS130U-C (1.3 million pixels, color)/ CS130U-B (1.3 million pixels, monochrome) CS500U-GC (5 million pixels, color)/ CS500U-GB (5 million pixels, monochrome) |
EG130U-C (1.3 million pixels, color)/ EG130-B (1.3 million pixels, monochrome) |
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1 inch |
CS2000-C (20 million pixels, color)/ CS2000-B (20 million pixels, monochrome) |
EG2000-C (20 million pixels, color)/ EG2000-B (20 million pixels, monochrome) |
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2/3 inch |
EG501-C (5 million pixels, color)/ EG500-B (5 million pixels, monochrome) |
Summary
The size of the image sensor is information necessary for calculating the field of view and selecting a lens. For CCTV lenses, use the following formula when calculating the lens for the desired vertical field of view:
f value = (distance to object (mm) x vertical size of image sensor (mm)) / vertical field of view
For macro lenses, the size of the image sensor is used to calculate the total magnification that will ultimately be displayed on the monitor.
The “flicker phenomenon” refers to a phenomenon in which abnormalities such as “light and dark fluctuations” and “color tone shifts” appear in images captured by a camera, although they cannot be detected with the naked eye.
In this article, we will introduce “What is the Flicker Phenomenon” and “How to Mitigate the Flicker Phenomenon”.
Some lighting devices flash to match the power frequency, while others pulse as a dimming system.
Although the flashing of light cannot be felt with the naked eye, if the shutter speed of the camera is faster than the blinking cycle, abnormalities such as “light and dark fluctuations” and “color tone shifts” will occur in the captured image. This is the flicker phenomenon.
The flicker phenomenon occurs under lighting such as fluorescent lamps that emit periodic light, and does not occur under direct current lighting.
There are two main symptoms of flicker.
In a camera with a global shutter system, the entire image periodically repeats fluctuations in brightness.
On the other hand, with a rolling shutter camera, horizontal stripes may appear in the footage, which may appear to flow vertically.
< Flicker Phenomenon: Horizontal Stripes of Light and Dark in Rolling Shutter Cameras>
It occurs under lighting that repeatedly emits periodic light, and does not occur in lighting with direct current lighting.
The flicker phenomenon can be suppressed to some extent by adjusting the camera’s exposure time or shutter speed, but it cannot be completely eliminated. Even if the flicker seems to disappear, the light and dark are changing over a long period of tens of seconds or more. Especially when using a high-speed camera under fluorescent lighting, a significant flicker phenomenon occurs.
※ If the shutter speed cannot be adjusted on the camera side, the aperture of the lens can be adjusted to compensate for the lack of illumination with DC lighting to reduce the effect of pulse lighting relatively.
The “flicker-free function” is a function in which the camera automatically detects the flashing of the light source and releases the shutter at a timing that has little effect on the brightness and color tone.
To avoid the flicker phenomenon, use direct current lighting or strobe lighting synchronized with the camera shutter for high-speed camera lighting.
We offer a wide range of high-speed cameras and lighting equipment suitable for those applications, such as high-speed camera lighting and strobe lighting.
If you are suffering from the flicker phenomenon, please feel free to contact us.
Low-cost high-speed camera (Color/ Monochrome) CHU30-C-RS / CHU30-B-RS
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High-Speed Camera CHU130EX
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Simple Lighting for High-Speed Camera SCH-SN48W
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Strobe Lighting CH-SN
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When using a camera with a wide field of view or a long operating distance, the support of the stand may be reflected.
In this case, adding a horizontal stay to a regular camera stand can avoid reflection.
The following camera accessories are also available at camera specialty stores.
If you would like to know more about our products, please contact our technical support.
The load capacity of the camera angle attached to the end of the flexible arm (FA100-M) manufactured by Shodensha is 5 kg.
By attaching this to the camera stand, it can be made into a 5 kg load-bearing type.
(A normal camera stand weighs 2 kg.)
In order to attach the camera angle for flexible arm to a 25mm dia. post, the following parts must be custom-made.
Since they are custom-ordered, the length can be manufactured according to your request.
Production Examples
<Camera stand with a load capacity of 5kg
Camera mounting screws are common in most cases.
In many cases, thermographs and large high-speed cameras also share the same mounting screws.
If you are looking for a stand with a high load capacity, you can easily find one by looking for camera supplies.
Although dedicated equipment may be available, we will introduce an easier and less expensive way to take pictures.
Load capacity 5kg type
Load capacity 10kg type
Shodensha also has a custom-made camera stand with a load capacity of 5 kg.
How long do you record for? How will it be stored? Is there a need to remotely view Live video? How many cameras are needed? There are various methods depending on the purpose. There are three main methods.
A camera and a recorder are required, and the camera and recorder are connected to one network. Videos are stored on the recorder. All necessary videos can be saved as data. Basically, Live video can be checked within the network.
Merit |
・Long time recording (e.g. 1 month) ・Multiple cameras (e.g., 16 cameras) can be recorded ・All recorded data can be saved |
Demerit |
・Wiring and setup are complex (generally done by a professional installer). ・Cameras are relatively inexpensive, but recorders are expensive. (Recorder prices vary depending on the number of units and capacity of recorders that can be connected.) ・Cameras are often integrated and lenses are not interchangeable. |
<Examples of commercially available security cameras and recorders>
In this system, you purchase only the camera and pay a monthly fee for cloud usage. Videos are stored on the cloud for a “fixed period of time”. You can watch them as many times as you like within that period. To fully save the video, it must be downloaded, and the downloadable time is determined by the initial contract. You can view the Live video from anywhere with the URL you are given.
Merit |
・Very easy to wire and set up ・Long time recording (e.g. 1 month) is possible ・Capable of recording multiple cameras (16 cameras, etc.) ・Viewing is possible from anywhere with an Internet environment |
Demerit |
・Full storage of recorded data is limited to a certain amount of time ・Lenses cannot be replaced in many integrated cameras ・Security concerns remain |
<An example of a commercially available cloud camera>
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The camera is not dedicated, but a generic product. It only connects to a PC via LAN or USB and is not connected to a network. Videos are stored on the connected PC or HDD connected to the PC. Live video can be viewed only on the connected PC.
メリット |
・Wiring and setup are very easy (software installation only) ・Lens can be replaced with a general-purpose industrial camera (C-mount) ・By adding software, it can be used in other ways (e.g., recording before and after an abnormal event) ・All data is recorded on a PC, so post-processing (editing) of files can be done with a series of PC operations ・Camera can be downsized |
デメリット |
・The recording time and the number of cameras are limited due to the limited capacity of the PC or HDD. (Những gì chúng tôi có thể cung cấp là camera 1,3 triệu pixel, có thể kết nối với 8 camera và ghi hình 8 giờ mỗi ngày |
Industrial cameras and additional software are available from us.
We sometimes receive requests from customers who want to use a USB camera to “capture and store long videos.” We have received requests from our customers to “record and save long videos” with a USB camera.
In this issue, we would like to introduce several methods for recording long videos with a USB camera.
Our USB 2.0 cameras can record with the included standard-supplied Viewer software, but the AVI file standard for exporting is outdated and a file size limit of 2 Gbytes exists.
If you need a short time, you can use this Viewer software. (In case of 1.3 megapixel type (1280X1024) at 30 fps, it can record for about 15 seconds.)
Our USB 2.0 cameras can also be used as DirectShow cameras, so basically you can record with commercial or free recording software that supports DirectShow.
If you have such recording software, you can check if it is possible to record using a demo unit on loan. One well-known free software is “Amcap” provided by Microsoft as a sample program.
(The only saving format is uncompressed (AVI).
Although not a USB camera, there is also a way to attach a USB 3.0 converter to an HDTV and record for long periods of time on a PC.
All of our HDTV models can record video if you use I-O Data Device’s GV-USB3/HD.
There are a few things to keep in mind when using a PC and a USB camera
for long-duration video recording.
Video data files can be very large.
There are some free video recording software available, but in most cases,
they are uncompressed (AVI files, etc.).
For long time recording, it is necessary to compress the data in H.246 format
or other formats to record for long periods of time.
In the case of 1 hour of recording at 1280 x 1024 (1.3 million pixels) at 30 fps,
the file size is 430 x 430 x 430 pixels (1.3 million pixels) at 30 fps,
・430GB if uncompressed
・If compressed, it will be about 16.5GB.
It is not a problem for about 24 hours, but be careful when the level reaches 3 days, 1 week, etc.
Even if recording can be done, it may not be possible to play it back with general-purpose playback software
such as Windows Multimedia Player.
For example, if you are recording for a week and each day has 8 hours of recording time,
do not batch record and create multiple files for one day (8 hours).
The compression will be 16.5 GB per hour (1.3 megapixels at 30 fps), which is 130 GB for 8 hours.
A week would be divided into 7 files. 130GB x 7 days = 910GB.
This means that 1TB of HDD can be used for recording. If a file is only 130 GB,
it can be played back with Windows multimedia player, etc.
Introducing a useful trigger control software that emits a trigger signal from an external source, such as a program controller (PLC) or sequencer, and uses an embedded USB camera.
①Simple is best light model for still image storage with trigger signal input: Hi TriggerF Light
・Our Hi TriggerF Light can save a still image or capture a screen image (temporary storage) at that moment
by inserting an external trigger signal into the camera.
・Live display is also possible without a trigger signal, making positioning and focusing easy.
・A digital zoom function allows you to enlarge or reduce the camera image to the desired size on your PC screen.
It also has a fit-in function that allows the camera image to fit perfectly on your PC screen.
・The exposure time can be adjusted so that even fast objects can be photographed without blurring.
→Perfect for cases where you only need to save still images with external trigger signal input!
②Middle model with still image storage + cross line display, time stamp, and binarization function with trigger signal input: Hi TriggerF Pro
→Perfect for still image storage with external trigger signal input + plus function!
→Perfect for use with multiple cameras up to 4/8 units!
DirectShow is a multimedia framework and API developed by Microsoft.
A DirectShow-enabled camera is a camera that works with the DirectShow framework.
The DirectShow filter processes the camera data according to the requirements of the DirectShow software, allowing the camera to be controlled by the software.
The filter matches the camera and software so that they can work together.
Without the filter, the software cannot properly process the data from the camera.
There are three main causes of problems:
① If a bug exists that prevents the software from properly utilizing the DirectShow framework.
②When the DirectShow filter is unable to process the data output from the camera according to the specifications required by the software.
③Data from the camera does not match the DirectShow filters supported by the software.
In both cases, correcting the respective causes will improve the situation.
(There are compounding factors, so sometimes everything has to be addressed.)
If you cannot use commercially available DirectShow software with our DirectShow-enabled camera, we can provide support such as analysis of the cause if you lend us the software. Please feel free to contact us.
When taking pictures, the camera may make extremely bright areas appear white (halation or blown out highlights), or extremely dark areas may become black and disappear from view (Black Crush).
The range in which the difference in brightness and darkness can be captured at the same time, from one step before halation (overexposure) to one step before blackout (completely dark, unable to see anything), is called the dynamic range. ) is measured.
The wider the dynamic range, the better the camera performance. However, no matter how powerful the camera is, it cannot match the ability of the human eye to capture images. For example, even if a scene is clearly visible to the human eye, when photographed with a camera, it may be overexposed or details may not be visible.
Recently, we have been receiving an increasing number of inquiries about using multiple USB cameras on a single computer at the same time.
I would like to discuss some points to note when constructing it.
If your PC has an available PCI-Express slot, you can add an “expansion board” to increase the number of USB ports (connection ports).
One advantage of this method is that one USB port is used per USB camera, so it is less likely to cause problems such as insufficient communication capacity (bandwidth shortage) of the PC or insufficient power supply from the PC to the USB camera due to the increase in data transmission volume caused by using multiple cameras.
This method is recommended when connecting multiple USB cameras at the same time, since it is less likely to cause problems such as insufficient communication capacity (bandwidth shortage) of the PC or insufficient power supply from the PC to the USB camera.
If three or four USB cameras are to be connected at the same time, we further recommend adding an “Industrial Expansion Board”.
The disadvantages are that the board can be added if there is an available PCI-Express slot in that PC, and that it takes more time and effort to add the board.
Disadvantages include the following.
①Use a USB hub to one USB port on the PC side
Since multiple cameras will be connected, there is a large possibility of “bandwidth shortage,” a shortage of PC communication capacity due to the increase in data transmission volume caused by the use of multiple cameras.。
Compared to adding an expansion board to the desktop to provide additional USB ports, this will further limit the amount of data the camera can use = the number of pixels (resolution) it can use.
②Using a USB hub to connect multiple cameras to a single USB port on the PC side will result in insufficient power supply to the USB camera, which will greatly increase the possibility of not being able to see the image.
The initial setup procedure for recognizing and displaying each camera may become complicated.
③The initial setup procedure for recognizing and displaying each camera may become complicated.
→Please contact our technical department if you would like to use multiple USB cameras for multiple activations. We can propose a total system.