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Method and apparatus for obtaining visual gravity center of image

A visual center of gravity and image acquisition technology, which is applied in image enhancement, image analysis, image data processing, etc., can solve the problems of not considering the differences of different elements, difficult to obtain image visual center of gravity, etc., and achieve the effect of improving accuracy

Active Publication Date: 2017-06-13
ZHEJIANG UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, when calculating the visual center of gravity, both of them simply convert the image into a grayscale image, that is, when obtaining the visual center of gravity of the image, only the gray value of the elements in the image is considered, and the influence of different elements on the visual center of gravity is not considered. The problem of difference makes it difficult to accurately obtain the visual center of gravity of the image

Method used

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  • Method and apparatus for obtaining visual gravity center of image
  • Method and apparatus for obtaining visual gravity center of image
  • Method and apparatus for obtaining visual gravity center of image

Examples

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Embodiment 1

[0026] This embodiment is an illustration of a method for obtaining the visual center of gravity of an image, and the method is composed of an identifying step S1, an obtaining step S2, and a calculating step S3.

[0027] Recognition step S1, identifying elements containing portraits in the image, by such as figure 1 The shown step S101 and step S102 constitute.

[0028] Step S101, extracting all elements in the image.

[0029] The elements in the image refer to all material pictures, background pictures and various texts in the image.

[0030] In this embodiment, the PSD file of an advertisement is taken as an example. The elements include images and text in the advertisement copy. Of course, in order to facilitate the extraction of all elements in the image, each layer in the PSD file can be required to contain only one element; for a layer containing more than two elements, the elements in the layer need to be extracted into a single element before processing.

[0031] S...

Embodiment 2

[0068] This embodiment is an illustration of a device for acquiring the visual center of gravity of an image.

[0069] see Figure 5 , the device 100 for acquiring the visual center of gravity of an image is composed of a recognition unit 1 , an acquisition unit 2 and a calculation unit 3 .

[0070] The identification unit 1 is used to identify elements including portraits from the image, and is composed of an extraction module 11 and a detection module 12 .

[0071] The extraction module 11 is used to extract all elements from the image, and the detection module 12 is used to detect one by one whether the elements obtained from the image contain portraits.

[0072] The acquiring unit 2 is used to acquire the face area and line of sight of the element including the portrait.

[0073] The calculation unit 3 is used to calculate the overall visual center of gravity of the image after the first weight expansion factor greater than 1 has been assigned to the face area and the se...

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Abstract

The invention relates to a method and an apparatus for obtaining a visual gravity center of an image, and belongs to the technical field of image processing. The method for obtaining the visual gravity center of the image comprises the steps of identifying an element containing a human image in the image; obtaining a human face region and a sight line in the element containing the human image; and calculating the overall visual gravity center of the image after the human face region is endowed with a first weight expansion factor greater than 1 and an element with an intersection point with the sight line is endowed with a second weight expansion factor greater than 1. According to the method, relatively important elements, namely, the human face region and the element with the intersection point with the sight line, in difference of influences of different elements on determination of the visual gravity center of the image are considered, so that the accuracy of obtaining the visual gravity center of the image can be effectively improved; and the method and the apparatus can be widely applied to advertisement production and the like.

Description

technical field [0001] The present invention relates to the technical field of computer graphics processing, in particular to a method and device for obtaining the visual center of gravity of an image. Background technique [0002] In images, especially in images with mixed graphics and text, human visual stability is closely related to the visual center of gravity of the image. From the center part to the upper right corner and lower right corner, and then return to the center of the screen that attracts the most attention and stay there. This center point is the center of gravity of the vision. The changes in the outline of the picture, the convergence of graphics, the distribution of color light and shade, whether there are portraits and their body movements, and visual orientation will all affect the visual center of gravity of the image. In image processing, especially in advertising production, the theme or important information to be expressed often cannot deviate to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/66G06K9/00
CPCG06T2207/30201G06T2207/20084G06T2207/20081G06V40/161
Inventor 孙凌云张雄伟杨智渊尤伟涛
Owner ZHEJIANG UNIV
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