whether the project is suitable for gray images

[runningCL]

Hello, I have a question about whether the project is suitable for gray images. When I try to convert 180000 RGB images to grayscale images and recalculate their AU values. As a result, the trained model does not change the input image.

[runningCL]

@donydchen

[donydchen]

The provided models are trained with RGB images, so directly testing the model with greyscale images might encounter some unknown issues. But for your case, I think it would be a better option if you feed the model with RGB images, and then convert the generated RGB images into greyscale images.