System and method for enhancing dynamic range in images

摘要: A system and method of enhancing dynamic range in images is disclosed that increases the contrast resulting image without requiring an increase analog-to-digital converter used to convert analog signals digital information. The achieve this advantageous result by providing per-pixel gain control circuitry selection circuitry. signal segmented into a number (N) multiple levels, where N selected be desired level enhancement. Multiple (G1) levels (G2) are also provided. for each pixel based upon segment which falls so may increased utilize full (R) converter. Once digitized, same on basis, total (G1*G2) kept substantially constant. In way, needing ADC. information enhanced (Log 2 N) bits, it companded down smaller bit video output device any transfer function during processing.