Subpixel-based image down-sampling

A system comprising:

• a memory to store instructions;
• and
• a processor, coupled to the memory, that executes or facilitates execution of the instructions to at least:
• receive a first array of pixels;
• divide the first array of pixels into 3 or more pixel ×3 or more pixel blocks, wherein pixels of a block of the 3 or more pixel ×3 or more pixel blocks comprise at least 3subpixels;
• alternately down-sample selected subpixels of the at least 3 subpixels of the pixels of the block in a diagonal direction;
• and
• generate a second array of pixels based on the selected subpixels.

An apparatus, comprising:

• means for dividing a first resolution image into at least 3 pixel × at least 3 pixel blocks, wherein pixels of a block of the at least 3 pixel × at least 3 pixel blocks comprise at least 3subpixels;
• means for alternately selecting subpixels of the pixels of the block along a diagonal direction;
• and
• means for creating a second resolution image based on the subpixels selected by the means for alternately selecting, wherein the first resolution image is defined to have a higher resolution than the second resolution image.

A computer readable storage device comprising computer-executable instructions that, in response to execution, cause a system comprising a processor to perform operations, comprising:

• dividing a first resolution image into m pixel by m pixel blocks, wherein pixels of a block of the m pixel by m pixel blocks comprise n subpixels, wherein m and n are integers that are at least 3;
• alternately selecting selected subpixels of the n subpixels of the pixels of the block along a diagonal direction;
• and
• generating a second resolution image based on the selected subpixels, wherein the first resolution image is defined to have a higher resolution than the second resolution image.