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Integrated circuit, image feature extraction method and terminal

An integrated circuit and image technology, applied in the field of image recognition, can solve the problems of tedious, slow, and poor real-time generation process of HOG feature descriptors

Active Publication Date: 2018-06-26
SHENZHEN INTELLIFUSION TECHNOLOGIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the existing HOG feature extraction technology is usually implemented by software, such as a general-purpose processor or a digital signal processor through program instructions. application in business

Method used

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  • Integrated circuit, image feature extraction method and terminal
  • Integrated circuit, image feature extraction method and terminal
  • Integrated circuit, image feature extraction method and terminal

Examples

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Embodiment 1

[0065] Please also refer to Figure 1 to Figure 3 ,in, figure 1 It is a schematic structural diagram of an integrated circuit for image feature extraction provided by Embodiment 1 of the present invention. Figure 2-Figure 3 The schematic diagrams of the internal structure of each computing circuit are shown respectively.

[0066] In this preferred embodiment, the image feature extraction integrated circuit 1 includes a storage circuit 10 and a computing circuit 12 coupled to the storage circuit 10 .

[0067] The integrated circuit 1 is used to receive the gradient information of the image to be processed, and finally output the gradient orientation histogram (Histogram of Oriented Gradient, HOG) feature of the image to be processed through a series of calculations of the gradient information by the calculation circuit 12 . The integrated circuit may be a programmable logic device, such as a field programmable logic array (Field Programmable Gate Array, FPGA), and may also ...

Embodiment 3

[0164] refer to Figure 7 As shown, in a preferred embodiment of the present invention, the terminal 7 includes a memory 71 , at least one integrated circuit 1 , at least one communication bus 73 , a display screen 74 and a processor 75 .

[0165] Those skilled in the art should understand that, Figure 7 The structure of the terminal shown does not constitute a limitation of the embodiment of the present invention, it can be a bus structure or a star structure, and the terminal 7 can also include more or less other hardware or software than shown in the figure , or different component arrangements.

[0166] In some embodiments, the terminal 7 includes a terminal capable of automatically performing numerical calculation and / or information processing according to pre-set or stored instructions, and its hardware includes but not limited to microprocessors, application-specific integrated circuits, programmable Program gate arrays, digital processors, embedded devices, etc. Th...

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Abstract

The invention discloses an integrated circuit. The integrated circuit comprises a storage circuit and a computing circuit coupled to the output end of the storage circuit, wherein the storage circuitis used for storing gradient information of a to-be-processed image; and the computing circuit is used for computing the gradient information and outputting a gradient orientation histogram feature ofthe to-be-processed image. The invention furthermore provides an image feature extraction method and a terminal. The computation of the gradient information of pixels of the to-be-processed image isfinished in parallel by utilizing the integrated circuit; and meanwhile, the to-be-processed image is subjected to block division and cell unit division processing, so that certain invalid operationsare reduced, the computing efficiency of image feature extraction is greatly improved, and the requirements of scenes of human face identification and the like on timeliness can be met.

Description

technical field [0001] The invention relates to the technical field of image recognition, in particular to an image feature extraction integrated circuit, method and terminal. Background technique [0002] An image descriptor is a representation of an image, and the well-known pixel value is the most common and simplest representation of an image. In an image, the appearance and shape of the local target can be well described by the gradient or the direction density distribution of the edge, which is essentially the statistical information of the gradient, and the gradient mainly exists at the edge. Therefore, in computer vision and image processing, Histogram of Oriented Gradient (HOG) is often used for image description of human target detection. Using HOG features can well express the shape information and motion information of the human body, forming a rich feature set . [0003] Equipment such as target recognition and tracking is in a complex environment with drastic...

Claims

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Application Information

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IPC IPC(8): G06K9/46G06K9/44
CPCG06V10/34G06V10/50
Inventor 周阳
Owner SHENZHEN INTELLIFUSION TECHNOLOGIES CO LTD
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