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Method and apparatus for classifying image

An image and equipment technology, applied in the field of object classifiers, which can solve the problem that the robustness of detection is not very high.

Inactive Publication Date: 2010-11-24
SONY CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This type of method is more suitable for detecting objects such as faces in images, but the robustness of detecting objects such as people is not very high

Method used

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  • Method and apparatus for classifying image

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Embodiment Construction

[0038] Embodiments of the present invention will be described below with reference to the drawings. It should be noted that representation and description of components and processes that are not related to the present invention and known to those of ordinary skill in the art are omitted from the drawings and descriptions for the purpose of clarity.

[0039] figure 1 The block diagram of is showing the structure of an apparatus 100 for generating a classifier for distinguishing object images from non-object images according to an embodiment of the present invention.

[0040] like figure 1 As shown, the device 100 includes a determination unit 101 , a difference calculation unit 102 , a gradient calculation unit 103 and a training unit 104 .

[0041] In the technology of using static image features to establish a classifier, object images and non-object images are collected, features are extracted from the collected object images and non-object images, and the extracted featu...

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Abstract

The invention discloses a method and an apparatus for classifying an image. The method comprises the following steps of: extracting a group of characteristics from an image to be used as a characteristic vector, wherein the extraction comprises the following steps of: determining a plurality of first regions arranged along a direction of a first shaft and a plurality of second regions arranged in a direction of a second shaft crossed with the first shaft for each characteristic of the characteristic vector; calculating a first difference between pixels and / or mean values of the plurality of first regions and a second difference between pixels and / or mean values of the plurality of second regions; calculating a gradient size and a gradient direction according to the first difference and the second difference to form each characteristic; and classifying the image according to the extracted characteristic vector.

Description

technical field [0001] The present invention relates to video or image classification (contains object / does not contain object), namely the detection or recognition of object in video or image, especially relates to the method for generating the classifier that is used to distinguish whether to contain the object to be detected in video or image and device, and method and device for classifying an image using the generated classifier. Background technique [0002] With the increasing popularity of applications such as video surveillance, artificial intelligence, computer vision, etc., there is an increasing demand for technologies to detect specific objects such as people, animals, vehicles, etc. that appear in videos and images. Among the methods for detecting objects in videos or images, it is known that a class of methods uses static image features to establish a classifier for distinguishing whether objects or non-objects are contained in videos or images, so that the cl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62
CPCG06K9/4647G06K9/4614G06V10/446G06V10/507
Inventor 张伦吴伟国
Owner SONY CORP
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