Computing histogram...
Analyzing histogram...
Applying correction...
Convert RGB to log-chroma space and compute 128×128 histogram with UV coordinate channels for robust illuminant estimation.
Multi-encoder convolutional cross-correlation network trained using our novel color metric and Siamese approach processes histograms to estimate illuminant.
Network outputs probability heat map P, from which the peak location gives the estimated illuminant color.
Apply diagonal chromatic adaptation transform to normalize the image under the estimated illuminant.