Method and device for extracting dominant hue of picture

Abstract

The embodiment of the invention discloses a method and device for extracting the dominant hue of a picture, and is used for realizing accurate extraction of the main hue of the picture. The method may include the following steps: smoothing an input picture to obtain a smoothed picture; calculating the vision significance of the input picture to obtain a vision significance value corresponding to each pixel point in the input picture; according to the pixel value of each pixel point in the smoothed picture, determining the color region in color space to which each pixel point in the smoothed picture belongs, the color space including a plurality of color regions; and using the vision significance value corresponding to each pixel point as a weighted value to obtain statistical values corresponding to the plurality of color regions respectively, and determining the main hue of the input picture according to the statistical values corresponding to the plurality of color regions respectively, the statistical value corresponding to each color region including the number of all the pixel points in the corresponding color region and the corresponding vision significance values.

Description

technical field [0001] The present invention relates to the technical field of image data processing, in particular to a method and device for extracting main colors of pictures. Background technique [0002] Image data processing can be applied to image recommendation, fast image retrieval, and similar image matching. During the aforementioned picture data processing, in the prior art, the main color tone of the picture can be used to complete the process of image recommendation, search and matching. For example, when a user performs a picture search, the main color of the picture can be extracted, and the search engine will select pictures with the corresponding main color from the picture database and return them to the user. Therefore, by introducing the main color of the picture, the recommendation, search and matching of pictures can be realized. [0003] In the above image data processing, it is necessary to extract the main color of the picture, that is, to identif...

AI Technical Summary

Problems solved by technology

[0005] The method of extracting the main color feature of the picture in the prior art has the following defects: for the input picture with rich texture of the object in the picture, the histogram statistics will deviate from the human visual perception, so that the main color cannot be accurately extracted

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