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Spiral matrix type frame difference smoothing method

A smoothing, matrix-based technology, applied in the field of image processing, can solve the problems of large interference of occlusion detection results and large fluctuation of global frame difference, so as to increase detection accuracy, improve certainty, and reduce the interference of global frame difference fluctuation. Effect

Pending Publication Date: 2021-12-03
合肥君正科技有限公司
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Problems solved by technology

[0003] However, there are the following defects in the prior art: the global frame difference of a frame of image fluctuates greatly due to factors such as the environment, which greatly interferes with the occlusion detection results

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  • Spiral matrix type frame difference smoothing method
  • Spiral matrix type frame difference smoothing method

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Embodiment Construction

[0040] In order to understand the technical content and advantages of the present invention more clearly, the present invention will be further described in detail in conjunction with the accompanying drawings.

[0041] Such as Figure 5 As shown, the present invention relates to a frame difference smoothing processing method of a spiral matrix type, and the method comprises the following steps:

[0042] S1. Parameter initialization, including: background initialization, creating block frame difference buffer empty vector D;

[0043] S2. Calculate block frame difference:

[0044] according to figure 1 As shown, each frame of image is divided into 16 regions (it can also be divided into 16 regions, that is, irregular regions are divided, such as Figure 4 Shown), the total number of non-zero pixels in the frame difference image in each area is counted respectively, that is, the frame difference characteristics of each block, and normalized, the calculation method is shown in...

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Abstract

The invention provides a spiral matrix type frame difference smoothing method on the basis of a method in the prior art. By performing moving average on the local frame difference in a certain time period, the global frame difference fluctuation interference can be reduced, and the detection accuracy is improved. The method comprises the following steps: S1, initializing parameters, including initializing a background and creating a block frame difference cache empty vector; S2, calculating a block frame difference: equally dividing each frame of image into 16 regions, respectively counting the total number of non-zero pixel points in the frame difference image in each region, namely the frame difference feature of each block, and normalizing; S3, carrying out block frame differential sorting; S4, caching the block frame difference; and S5, smoothing the frame difference.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a spiral matrix type frame difference smoothing processing method. Background technique [0002] At present, the in-vehicle monitoring screen is mainly based on the background frame difference to achieve occlusion detection. Due to the complex environment in the car, the background frame difference of the in-vehicle monitoring screen is easily affected by factors such as the increase or decrease of passengers, activities, light outside the window, and changes in scenery. Moreover, when the vehicle is running, the screen will inevitably shake; these will cause the background frame difference to fluctuate all the time, which brings great uncertainty to the occlusion detection. Therefore, counting frame differences within a certain period of time, and smoothing by weighted average method is an effective method to eliminate interference. [0003] However, the following defe...

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Application Information

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IPC IPC(8): G06T5/00G06T7/11G06T7/90G06T7/223
CPCG06T7/11G06T7/90G06T7/223G06T5/70
Inventor 马艳于康龙
Owner 合肥君正科技有限公司
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