Final answer:
The pixel bit depth of an image directly influences the image scale of contrast.
Step-by-step explanation:
The pixel bit depth of an image will have a direct influence on the image scale of contrast.
Pixel bit depth refers to the number of bits used to represent each pixel in an image. The higher the bit depth, the more shades of colors or levels of gray that can be represented in an image. This directly affects the contrast of the image, as more shades of colors allow for a greater range of contrast between dark and light areas.
Therefore, the correct option influenced by pixel bit depth is image scale of contrast.