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发明授权
CN100570629C 图像处理装置和方法 失效 - 权利终止

图像处理装置和方法
摘要：
一种图像处理装置和方法，以像素单位将图像分类为人工图像和自然图像。广域特征量抽出部(911)从图像中抽出广域特征量。广域人工图像度算出部(912)根据所抽出的广域特征量相对于作为广域特征量的BEP和BFP在二维空间中的统计分布范围的位置关系，算出广域人工图像度。狭域特征量抽出部(914)从图像中抽出狭域特征量。狭域人工图像度算出部(915)根据所抽出的狭域特征量相对于作为狭域特征量的PNDP和SNDP在二维空间中的统计分布范围的位置关系，算出狭域人工图像度。人工图像度生成部(913)利用广域人工图像度和狭域人工图像度算出人工图像度。本发明可以适用于图像转换装置。
摘要（英）：

An image processing apparatus includes the following elements. A broad-range feature extraction unit extracts broad-range features from pixels located in a predetermined area in relation to a subject pixel of a first image. A broad-range degree-of-artificiality calculator calculates, in a multidimensional space represented by the broad-range features, the broad-range degree of artificiality from the positional relationship of the broad-range features to a statistical distribution range of an artificial image of the first image. A narrow-range feature extraction unit extracts narrow-range features from pixels located in the predetermined area in relation to the subject pixel of the first image. A narrow-range degree-of-artificiality calculator calculates, in a multidimensional space represented by the narrow-range features, the narrow-range degree of artificiality from the positional relationship of the narrow-range features to a statistical distribution range of the artificial image. A degree-of-artificiality calculator calculates the degree of artificiality of the subject pixel.

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