Subpixel antialiasing

1. What is subpixel in image processing?
2. How many subpixels is a pixel?
3. What is subpixel precision?
4. How do subpixels work?

What is subpixel in image processing?

A subpixel edge estimation technique is used to generate a high resolution edge map from the low resolution image, and then the high resolution edge map is used to guide the interpolation of the low resolution image to the final high resolution version.

How many subpixels is a pixel?

Each pixel on an OLED TV has four individual subpixels: white, red, green, and blue (WRGB), which are never all on at the same time.

What is subpixel precision?

It means that the data available to construct the displayed image statistically exceeds one sample per displayed pixel. For example if you had a 256 x 256 data array that you were displaying at 64 x 64 pixel resolution, then the data is sufficient to give you subpixel accuracy.

How do subpixels work?

Subpixel rendering works by increasing the luminance reconstruction points of a color subpixelated screen, such as a liquid crystal display (LCD) or organic light-emitting diode (OLED) display. This thumbnail image is downsized and does not show the technique.