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Statistical method of image histogram and system thereof

An image histogram and statistical method technology, applied in the field of image processing, can solve the problems of long time consumption and high system power consumption, and achieve the effects of reducing time and power consumption, speeding up data processing, and reducing read and write operation steps.

Active Publication Date: 2015-07-29
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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Problems solved by technology

Due to the need for pixel-by-pixel statistics and the need to frequently read the data in the memory, using the existing method to make statistics on the histogram has the disadvantages of long time consumption and high system power consumption.

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  • Statistical method of image histogram and system thereof
  • Statistical method of image histogram and system thereof
  • Statistical method of image histogram and system thereof

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Embodiment Construction

[0022] In the following description, many technical details are proposed in order to enable readers to better understand the application. However, those skilled in the art can understand that without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the implementation of the present invention in detail in conjunction with the accompanying drawings.

[0024] The first embodiment of the present invention relates to a statistical method for an image histogram. figure 1 is a schematic flowchart of the statistical method of the image histogram. Such as figure 1 As shown, the statistical method of the image histogram comprises the following steps:

[0025] In step 101, the image pixel data is obt...

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Abstract

The invention relates to an image processing technology, and discloses a statistical method of an image histogram and a system thereof. In the method and the system, identical continuous pixels are compressed in advance by means of run length encoding according to the characteristic that the identical continuous pixels exist in original image pixel data, histogram statistics of the identical continuous pixels can be finished in every operation, and the reading and writing operation steps of histogram statistics are reduced, so that the time and power consumption of histogram statistics are reduced greatly. Moreover, run length encoding is performed during acquisition of the original image pixel data, so that idle resources of a system can be utilized fully.

Description

technical field [0001] The invention relates to image processing technology, in particular to a statistical method and system of an image histogram. Background technique [0002] Image histogram represents the distribution of pixel values ​​in an image, and it is widely used in image processing fields such as image enhancement, image segmentation, and image matching. The statistics of image histogram is an important part of image preprocessing and the premise of further image processing. The basic method of image histogram statistics is point-by-point statistics of image pixels. For an n-bit grayscale M×N size image, the range of pixel grayscale value i is [0,2 n -1], the corresponding image histogram is h(i). When performing histogram statistics, use the gray value of the current pixel to address h(i) on the image in row-by-row order, and add one to the current value of h(i) until the image traversal is completed. Using the above method, for an 8-bit grayscale image, an...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T9/00G06T7/40
Inventor 汪辉刘超章琦田犁汪宁方娜封松林
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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