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Surveillance-Slide14

Shown on this slide is a real-world example of Apical’s (acquired by Arm®) WDR processing and the iridix engine in action. Imagine if the image on the left were captured with a WDR image sensor at 16-bits per color per pixel. The image contains a vast amount of data, but unfortunately, it is improperly exposed. However, the image does have certain regions that are exposed properly (e.g. the sidewalk and to an extent the people on the sidewalk). The dilemma here is how to compress the image from 16-bits per color per pixel down to a standard 8-bits per color per pixel that standard video encoders can accept, and apply proper tone mapping to the image, regionally, so that underexposed areas are gained up while properly exposed areas are preserved and not over-saturated. This is exactly the situation that Apical’s (acquired by Arm®) iridix algorithm solves, and can be applied in particular to images (or video streams) from WDR image sensors.

PTM Published on: 2011-08-03