Invention Grant
US08478063B2 Image processing apparatus and image processing method 有权
图像处理装置和图像处理方法

Image processing apparatus and image processing method
Abstract:
An image processing apparatus sets the pixels of an input image as process target pixels by using low pass filters (LPF #1—1 to LPF #1—n) each having different level value ranges, computes the average values of the pixels included in the level value ranges from the pixels of the input image including process target pixels included within the filter sizes of the low pass filters, generates level-value-limited smoothed images #1 limited by the level values, generates level-value-limited smoothed images #2 by using low pass filters (LPF #2—1 to LPF #2—n) each having level value ranges or filter sizes different from those of LPF #1—1 to LPF #1—n, selects either of the level-value-limited smoothed images #1 or the level-value-limited smoothed images #2 on the basis of the process target pixels and level values different from the level values utilized by LPFs, synthesizes the selected level-value-limited smoothed images, and generates a smoothed image.
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