The number of pixels in a given active area arranged horizontally by vertically that make up an image.

在规定的有效面积的象素的数量安排水准以垂直，那补足一幅图像。

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Colorization of grayscale image is in general an active and challenging area of research in image processing.

黑白图像的彩色化是图像处理领域一个活跃的、有挑战性的研究课题。

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Texture is an important item of image information, texture-based image retrieval has been an active research area, and the similarity comparison of texture features is a key to image retrieval.

纹理是图像的重要属性，基于纹理特征检索图像是当前的研究热点，对图像的纹理进行相似性比较是进行图像检索的关键。

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