Two raster images of the same size are given, the colors of which pixels are specified in the RGB color space with a color depth of 8 bits for each color coordinate: The original image 2 was pasted on top of the original image 1 in a graphics editor that supports various blending modes. After that, four different layer blending modes were set for the layer with the original image 2. As a result, the following four images were obtained:
It is known that the layer blending modes listed below were used. When each of these modes is used, the values of the color coordinates R, G and B in the resulting image are calculated independently for each coordinate using the same formulas. In formulas, C1 stands for the value of the corresponding color coordinate in the source image 1, C2 is the value of this color coordinate in the source image 2, and Cr is the value of this color coordinate in the resulting image.
Determine which of the layer blending modes was used to obtain each of the above resulting images. In the answer specify four numbers in a row without spaces. First, the number in the list of the layer blending mode, which is applied to obtain the first resulting image, then the mode number used to obtain the second image, then the third and the fourth, respectively. Note: the values of some colors on the images may differ from those obtained by the above formulas by several units.
- How is the color coordinate value calculated in the image? (in the task it is C1, C2)
- How to argue in such tasks? (otherwise they constantly cause difficulty, I cannot navigate at all in these pixels, RGB ...)
Thanks in advance for the answer!