Method for detecting salient regions in sequence images based on improved visual attention model

A visual attention model and sequence image technology, applied in the field of image processing, can solve the problems of unrealized direct processing of sequence images and low efficiency, and achieve the effect of simple model structure and improved detection efficiency

Active Publication Date: 2014-09-24
XIDIAN UNIV
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Problems solved by technology

However, these methods first process the static image to obtain the feature map, and then integrate the feature map into the saliency map, which is not efficient and does not realize the direct processing of sequence images.

Method used

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  • Method for detecting salient regions in sequence images based on improved visual attention model
  • Method for detecting salient regions in sequence images based on improved visual attention model
  • Method for detecting salient regions in sequence images based on improved visual attention model

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Embodiment Construction

[0021] refer to figure 1 , the present invention is based on the sequence image salient area detection method of improved visual attention model, comprises the following steps:

[0022] Step 1: Divide the sequential images into two parts, the learning image α and the testing image β in chronological order, and generate a fixation map M of the salient regions of the learning images according to the prior knowledge.

[0023] 1.1) Use human eyes to determine the area of ​​the gaze point in the image, mark the area where the gaze point is concentrated with white, and mark the background part with black;

[0024] 1.2) Convolute the marked image with a two-dimensional Gaussian kernel function to obtain a gaze map M.

[0025]Step 2, generate the feature saliency map χ of the learning image 1 And feature saliency map weight vector w, get the salient point coordinates of the gaze area.

[0026] 2.1) Use Itti's visual attention model to extract the initial feature maps of color, brig...

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Abstract

The invention discloses a method for detecting salient regions in sequence images based on an improved visual attention model. The method mainly aims at solving the problems that an existing method for detecting salient regions based on the visual attention model is complex in process and poor in real-time performance. The method includes the implementation steps that firstly, a watching graph of salient regions of a study image is generated, a feature saliency graph and weight vectors of the feature saliency graph of the study image are generated, and salient point coordinates are recorded; secondly, a saliency graph of a test image is generated, salient point coordinates of the saliency graph of the test image are recursively predicted through the salient point coordinates of the study image, and a restraint core function is established to highlight the regions where salient points are located; thirdly, the salient point coordinates are updated, and salient regions of a next test image are predicted through a salient point coordinate recurrence relation and the restraint core function; fifthly, the salient regions of the sequence images are detected by cyclically executing the third step and the fourth step. The salient regions in the sequence images can be detected in real time, the model is simple and effective, and the method can be used for target recognition.

Description

technical field [0001] The invention belongs to the technical field of image processing, in particular to an image region retrieval method, which can be used for target recognition. Background technique [0002] The mechanism of visual selective attention is an interdisciplinary subject of psychology and computer science. "Attention" is an important mechanism in the process of human perception of the external environment. It is precisely because of the "attention" mechanism that human beings can quickly focus on a few interesting information sources and improve their information processing efficiency. [0003] Nowadays, with the rapid development of information technology, people pay more and more attention to digital image application technology. The amount of data and information contained in digital images is increasing, while traditional image processing algorithms give equal priority to each pixel in the image, which makes the time complexity and space complexity of th...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
Inventor 胡艳艳韩冰黄帅李瑞沙露露仇文亮王韵彤柳畅
Owner XIDIAN UNIV
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