Methods and systems for improving display resolution in images using sub-pixel sampling and visual error filtering

摘要

Embodiments of the present invention provide systems and methods for converting a higher-resolution image to a lower-resolution image with reduced visible errors. These embodiments comprise splitting a higher-resolution opponent color domain (OCD) image into separate initial luminance and initial chrominance channels followed by sub-pixel sampling on said initial luminance channel thereby creating an additive color domain (ACD) luminance image. This ACD luminance image is then converted into an OCD luminance image and split into separate sub-pixel sampled (SPS) luminance and SPS chrominance channels. The SPS chrominance channels are high-pass filtered and the initial chrominance channels are low-pass filtered. The filtered initial chrominance channels are sub-sampled and combined with the high-pass filtered SPS chrominance channels. These combined chrominance channels are then combined with said SPS luminance channel to form an error-reduced lower-resolution image.