It is a technique to express a wider dynamic range than normal image.
Reducing the contrast of the original image with large contrast and take a wide dynamic range.
Even with images with differences in brightness and darkness, it is possible to reduce blackout and whiteout.
The following is an excerpt from cameras specifications made by other companies, but WDR (wide dynamic range) has the same function.
There is what is called a dynamic range in the camera vocabulary. The dynamic range is the range of the brightest part and the dark part that the imaging element can feel.
If it exceeds this range on the bright side, it becomes halation (white jump).
The screen becomes black when exceeding this range in the dark.
HDR and WDR are functions that widen this range and reduce the difference between bright and dark areas. It is used for remove halation.
(However, if you use this function, the contrast will be lowered.)
For example: If you shoot a picture with differences in light and darkness, it will be like the picture below.
| Normal function shooting | HDR function shooting |
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Our HDTV camera has HDR function.
By applying this, you can shoot images with reduced halation.
(It is an effect of widening the dynamic range. Although it does not make infinite, it can not be removed completely)
| Normal function shooting | HDR function shooting |
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| Normal function shooting | HDR function shooting |
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If this HDR function is combined with a filter and V character block, the performance will be further improved.
<HDR function + polarization filter>
<HDR function + White V character block (background)>
