title: My vgg16 model is pretrained by RGB images but my test data are gray-scaled. would my result improve if my training dataset were gray-scaled too?
body: <p>I have trained a VGG16 model to classify Chest X-Ray images which are gray-scaled images.
  As you know VGG16 model is pre-trained by the IMAGENET dataset in which all the images are RGB.
  however, my results were reliable, I was wondering if VGG16 was pre-trained using gray-scaled images,  would I achieve better results?</p>