Method and apparatus for classifying Image based on the Image Feature

摘要

An apparatus and a method for classifying images are provided to make it possible to classify input images into business graphic images and photographic images more accurately. A color space transformation unit(105) transforms each of input images into a color space composed of lightness and saturation components. A lightness analysis unit(110) calculates a lightness frequency distribution of the light components. A saturation analysis unit(120) calculates an average of the saturation components. An image classification unit(130) compares an estimation function, which is obtained by using the calculated lightness frequency distribution and the average of the saturation components, with a threshold value to classify each of the input images. An image classification unit(140) calculates an evaluation function which uses a calculated brightness frequency distribution and the distribution of chroma component average and frequency.