PROJECT TITLE :

Single-Exposure HDR Technique Based on Tunable Balance Between Local and Global Adaptation

ABSTRACT:

This transient describes a high-dynamic-vary technique that compresses wide ranges of illuminations into the available signal range with one exposure. An online analysis of the image histogram provides the sensor with the required feedback to dynamically accommodate changing illumination conditions. This adaptation is accomplished by properly weighing the influence of local and global illuminations on every pixel response. The main benefits of this technique with respect to similar approaches previously reported are as follows: 1) commonplace active-pixel-sensor circuitry will be used to render the pixel values and a couple of) the resulting compressed image illustration is ready either for readout or for early vision processing at the very focal plane without requiring any extra peripheral circuit block. Experimental results from a prototype good image sensor achieving a dynamic vary of 102 dB are presented.