Contrast: this defines the difference between color and brightness of an object with others or parts of an image with another part of the same image or other images. Contrast is generally used to differentiate between darker and lighter areas of an image or object.

Pixel binding: this is the process of combining multiple pixels in one superpixel to reduce noise and power consumption of an image creation this technique is used in the cameras that means in the image creation stage rather than the displaying stage to capture less noisy images

Contrast: Contrast is the difference in luminance or colour that makes an object distinguishable. In visual perception of the real world, contrast is determined by the difference in the colour and brightness of the object and other objects within the same field of view.

Pixel Binding: Pixel binding is the process of combining the electric charge from adjacent CMOS or CCD sensor pixels into one super-pixel, to reduce noise by increasing the signal-to-noise ratio in digital cameras.