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Image processing method, apparatus and system

An image processing device and image processing technology, applied in the field of image processing, can solve the problems of large DDR bandwidth occupation and slow speed, etc.

Inactive Publication Date: 2018-01-12
SHENZHEN INTELLIFUSION TECHNOLOGIES CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

During the whole process, the processor and DDR need to continuously exchange data, which makes the extraction of feature values ​​slower, and at the same time, takes up a lot of DDR bandwidth.

Method used

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  • Image processing method, apparatus and system
  • Image processing method, apparatus and system
  • Image processing method, apparatus and system

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Experimental program
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Embodiment approach

[0090] As an optional implementation, the method also includes:

[0091] While buffering the first zoomed image data into the second internal memory, read a second part of the image data in the image data from the external memory, so as to buffer the second part of the image data to the first internal memory, and perform image scaling processing on the second part of the image data, the first part of the image data is different from the second part of the image data.

[0092] In this optional implementation manner, after the image scaling process on the first part of the image data is completed, the electronic device may store the first scaled image data in the second internal memory Read the second part of the image data in the image data in the memory, and so on, without waiting for the extraction of the first image feature value of the first part of the image data to be completed before reading the second part of the image data, so as to be able to Save waiting time and im...

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Abstract

The invention discloses an image processing method. The method comprises the steps of reading a first part of image data in image data needed to be processed from an external memory; caching the firstpart of the image data to a first internal memory, and performing image zooming processing on the first part of the image data to obtain first zoomed image data; caching the first zoomed image data to a second internal memory, and performing gradient calculation on the first zoomed image data to obtain first gradient image data; caching the first gradient image data to a third internal memory, and performing eigenvector extraction on the first gradient image data to obtain a first image eigenvalue; and storing the first image eigenvalue to the external memory. The invention furthermore provides an image processing apparatus and an electronic device. The speed of eigenvalue extraction can be increased; and meanwhile, the bandwidth occupation of the external memory is reduced.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to an image processing method, device and system. Background technique [0002] Features are the corresponding essential characteristics or characteristics of a certain type of object that are different from other types of images. For images, each image has its own characteristics that can be distinguished from other types of images. [0003] In the processing flow of the image feature value extraction algorithm, it mainly includes three steps: image scaling, gradient calculation and feature vector extraction. These three steps are all implemented by software, that is, the processor is implemented through program instructions. In this implementation, at first, the processor needs to read the image data from the external DDR (Dual Data Rate, double-rate synchronous dynamic random access memory), and perform image scaling processing on the image data. Back to the DD...

Claims

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Application Information

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IPC IPC(8): G06F3/06G06T3/40
CPCG06F3/06G06T3/40
Inventor 周阳
Owner SHENZHEN INTELLIFUSION TECHNOLOGIES CO LTD
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