>>6208878Quick Photoshop process.
Auto-contrast to make the blacks and colors stand out, auto-tone to get rid of the yellow tint to the white pieces and make them bright white, some Shadows/Highlights tweaking if the white pieces are overly bright, then some playing with the Brightness and Contrast sliders, lightening or darkening the image as needed, and raising the contrast 60-100%.
This picture I just went auto-contrast, auto-tone, and cranked up the contrast.