Technique for Enhancing the Quality of Compressed Video Images

摘要

The scene is illuminated by light pulses at higher intensities at predetermined times than at times between the predetermined times. Images of the scene are captured at the predetermined times to provide a sequence of anchor frames in a stream of images, and images of the scene are captured at times between said predetermined times to provide non-anchor frames in the stream. The anchor and non-anchor frames are then compressed and processed to produce video with greater compression and reduced noise artifacts.;The scene is illuminated by light pulses with wavelengths outside the visible range. Upon sensing motion, the scene is illuminated by light pulses to provide video in the visible wavelength range.;The scene is illuminated by a sequence of light pulses of different wavelengths when motion is detected in the scene. Different wavelength images of the scene are combined to provide higher resolution colored images without color filtering.