PixMaster
®
BlackCast
BlackCast is an image issue we discovered during our research and development. Just as color cast affects the colors in photography, BlackCast exclusively affects the exposure of the image, causing it to appear dark without oversaturating the colors.
Imagine a photograph placed in a room for several months gathering dust, causing it to appear dull. Gently removing the dust reveals the correct exposure and colors of the image. Similarly, our BlackCast removal technology aims to restore the original colors and exposure by addressing the underlying darkened areas.
The BlackCast problem resembles an exposure issue, but traditional methods like adjusting exposure, shadows, or levels often lead to unintended consequences such as fading the image, overexposing lighter areas, or producing unnatural results.
The challenge lies in distinguishing between exposure problems and BlackCast issues. Exposure problems typically manifest with saturated colors, whereas BlackCast presents as a darkened image without saturated colors. This issue commonly arises when subjects are backlit or in shadowed areas, such as under trees.
This understanding helps us develop targeted solutions that address BlackCast effectively, ensuring images retain their intended exposure and color balance.
Here are a few examples of blackcast issues.
BlackCast removal technology tries to removes the undesirable blackcast from the image, restoring the image's original colour and exposure.
Comparison of BlackCast Removal, Brightness , and Exposure Adjustment.
The image below is a good example to illustrate the concept. A portion of the lady's face is in shadow, and her skin tone is not saturated. Also, we don't want to overexpose the face's lighter parts. So we used blackCast to restore the correct colour of the image without overexposing the lighter region of the skin.
This is a common practise to keep the subject in shadow for even lighting. We can observe that there is some blackness in the original image. After applying blackcast removal, we can achieve natural colour and exposure from the photograph.