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latest security or automotive camera takes full advantage of recent advances in digital imaging technology and increasingly
incorporate intelligent algorithms based on motion and object detection to automate the surveillance process.
If the ultimate aim of a security camera is to replace a human observer at the scene, a WDR capability is essential.
While a combination of low noise CCD or CMOS sensors and an intelligent auto-gain algorithm is readily able to adjust camera sensitivity between day and night conditions, it is scenes in which very bright and dark areas co-exist that present the most serious challenge.
These occur frequently in real situations: at dawn and dusk; in direct sun with deep shadows; under backlit conditions found frequently in entrance areas; at night under directed artificial illumination.
The company’s specialized WDR imaging technology performs many useful functions - strong dynamic range compression, natural appearance, no generation of false contours & edges, and preservation of color and detail, and efficient DSP or IC implementation - even in extremely bright and dark conditions and it is also quite suitable for security and automotive applications.
ClairPixel, founded in 2007, is a fabless semiconductor company and also a leading company in the field of wide dynamic range sensors in Korea.
The company has developed a single chip 120Db WDR (Wide Dynamic Range) CMOS sensor with a patented pixel architecture and novel synthesis algorithm that does not need external frame buffer memories or back-end DSP.
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