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Feature model generating method and feature model generating device

A feature model and model technology, applied in character and pattern recognition, instruments, computer parts, etc., can solve the problem that the visual dictionary model cannot express the spatial information of the target well.

Inactive Publication Date: 2016-03-16
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] To sum up, the existing visual dictionary models cannot express the spatial information of the target well, and also suffer from many limitations in video-related applications.

Method used

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  • Feature model generating method and feature model generating device

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Embodiment Construction

[0033] Various embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Here, it is to be noted that, in the drawings, the same reference numerals are assigned to components having substantially the same or similar structures and functions, and repeated descriptions about them will be omitted.

[0034] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail in the following order.

[0035] 1. Summary of thought of the present invention

[0036] 2. Feature model generation method

[0037] 2.1. Specific examples

[0038] 3. Feature model generation device

[0039] 4. Vehicle control system

[0040] 5. Object detection subsystem

[0041] 1. Summary of thought of the present invention

[0042]In the process of researching the technical problems in the prior art, the inventor realized that: a target object is usually an organ...

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Abstract

The invention discloses a feature model generating method and device. The method comprises acquiring feature points in a target image and location information and description information of the feature points; searching matching visual entries matching the feature points based on the description information from a visual dictionary model consisting of a second type of visual entries and a first type of visual entries which have relevance with other visual entries in spatial relations; determining mapping target visual entries based on the types of the matching visual entries matching the feature points, and calculating the feature weight that the feature points are mapped onto the mapping target visual entries at least based on the description information of the feature points and the matching visual entries; and generating a feature model of the target image and with spatial information based on the feature weight on the visual entries in the visual dictionary model. Therefore, the method of the invention can be used for generating the feature model of the target image and with spatial information.

Description

technical field [0001] The present invention relates to the field of digital image processing, and more specifically, the present invention relates to a feature model generation method and a feature model generation device. Background technique [0002] The visual dictionary model (or called the visual word bag model BoF) is one of the best methods in the field of object classification or object recognition. The model can well express the characteristics of the target in order to obtain a higher recognition rate. [0003] The construction of the visual dictionary model is realized based on the features of feature points, so the model is invariant to position, illumination, rotation and affine transformation. At the same time, the model is also robust to partial occlusions and offsets. [0004] However, the traditional visual dictionary model cannot obtain a good recognition rate because it directly generates histogram features from all the feature points in the target with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/46G06K9/62
Inventor 胡平李静雯师忠超鲁耀杰
Owner RICOH KK
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