![remove black colorcast remove black colorcast](https://i.ytimg.com/vi/V-Lw9pW7DT4/maxresdefault.jpg)
Photoshop has a feature that works quite well on the images I tested which is: Open the image.
#REMOVE BLACK COLORCAST CODE#
That will mask out the sky so the blue color will return. I have been trying to find some source code or library that I can call from c to reduce the color cast of the images.
![remove black colorcast remove black colorcast](https://i.ytimg.com/vi/FzcWfCLyDpc/maxresdefault.jpg)
Select the Gradient tool and drag a black-to-white gradient from just above the horizon to just below it. A little bit of blue looks more natural than pure grey.īecause you also removed a large part of the blue of the sky, this needs to be corrected by adding a layer mask. It’s often better not to remove it completely.
![remove black colorcast remove black colorcast](https://i.ytimg.com/vi/B_W6obSVpq8/maxresdefault.jpg)
Go to the Saturation slider and move that to the left until the color cast in the shadows has disappeared. Select the left eyedropper tool and click somewhere in the blue shadows. It doesn’t matter if the color cast is really blue or a bit more cyan, Photoshop will help you getting that right. By dragging the white slider to the left we are bringing back the details. As the image in highly, colorcasted so blue color has lost some details. This white area depicts the details of the blue color present in the image. then tap the ADV (advanced) icon so that it appears black. Slowly move the selector tool across the image until the preview shows you a more acceptable color range for your image. This will help to eliminate the warm or cool color cast, so that your whites appear white as. Now, you want to scan the image with the selector, watching the preview in the upper left hand corner. Head over to the Develop Module and select the White Balance selector. A different method is needed.Īdd a Hue/Saturation adjustment layer and switch to Blue. Change the color to Blue and drag the white slider to the left until it meets the white area. I chose a film scan with a definite blue color cast. black, gray) have equal RGB components, so any unnatural color cast can be. Removing the blue color cast using one of the other methods, would make the snow very yellow indeed and would also remove the blue from the sky. The original image had some slight touchup to remove some spots before the. Images of snow often have blue shadows, even if the snow itself is white or even yellowish because of late afternoon light. Sometimes an image can have a color cast that does not have an effect on the entire image, but only on the shadows.