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Picture corner-point quick extraction method and realizing device therefor

A technology of corner point extraction and extraction method, which is applied in image data processing, image data processing, instruments, etc., to achieve the effect of high integration, reduced structure, and simple structure

Inactive Publication Date: 2007-06-13
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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Problems solved by technology

At present, there is no report on the method and hardware implementation of corner point extraction based on the use of high-speed computing devices and parallel processing.

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  • Picture corner-point quick extraction method and realizing device therefor
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  • Picture corner-point quick extraction method and realizing device therefor

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Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0023] The method of the present invention adopts pipeline connection and neighborhood image parallel array processing mode. As shown in FIG. The input of the unit is connected. The image corner point extraction process includes image input, image enhancement, image filtering, image binarization, image erosion, and image corner point extraction seven processing units; that is, the extraction process is regarded as a task, and a large task can be decomposed into Small tasks of roughly the same complexity that can be done independently.

[0024] The digitized image data passes through each processing unit in a pipeline. When the pipeline is full, from the input end of the system to the output end of the system, each processing unit is performing its own function, and the corner point extraction unit is processing in parallel. data (see Figure 2). With the en...

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Abstract

The invention discloses an image corner fast extracting method and device, adopting flow line connection and neighbourhood image parallel array processing mode, where the flow line connection connects units in the extracting course together in series in sequence; the image corner extracting course processing units include image input, image intensifying, image filter, image binarizing, image corroding and image corner extracting units, where data of the image corner extracting unit are processed in parallel in the neighbourhood image parallel array processing mode, and the image corner extracting unit buffers the data to be processed and reads data from buffer memory in parallel, implementing parallel and real-time processing, i.e. simultaneously receiving input information, and after finishing task execution, all the registers in the image corner extracting unit output at the same time. And the invention can implement real parallel image processing.

Description

technical field [0001] The invention relates to a technology capable of realizing fast extraction of image corner points, in particular to a method and a device for fast extraction of image corner points, which can be applied to fields such as image matching, target description and recognition, motion estimation, and target tracking. Background technique [0002] Image matching technology is widely used in remote sensing image processing, target recognition, image reconstruction, robot vision and other fields. Matching based on image feature points (such as corner points and edge points) is one of its main research directions. Since the corner points correspond to the positions with high information content in the image, compared with the original image, using the corner points for matching calculation can greatly reduce the amount of calculation. So it can have a great application in image matching. In the hardware implementation process of the algorithm, most of the curr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/46G06T1/00
Inventor 杨光宇佟新鑫王庆山刘晓安张心宇
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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