| 摘要 |
Provided are an apparatus and method of compressing a dynamic range of an image. In the apparatus, a periphery value production unit calculates periphery information about peripheral pixels for each polyhedron using a summed area table produced from an analog pixel stream for a previous frame of an image, multiplies the periphery information by predetermined weight values, adds up results of the multiplications, and outputs a result of the addition as a periphery value. A pixel value correction unit corrects a pixel value of a target pixel using the periphery value and outputs a result of the correction. The peripheral pixels are located around the target pixel and included in the previous frame, and a kernel distribution expressed in a kernel function, which is a distribution of weight values different depending on locations of pixels included in the image, is approximated to a sum of the polyhedrons.
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