Producing method capable of global indexing coding sequence and uses thereof

A coding sequence and global indexing technology, applied in image coding, using optical devices, and image data processing, etc., can solve the problems of slow system speed, low work efficiency, and complicated calculation, and achieve fast system speed, good real-time performance, and high efficiency. high effect

Inactive Publication Date: 2007-09-26
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the disadvantages of existing encoding sequence generation methods and their applications, such as complex calculation, slow system speed, and low work efficiency, the present invention provides a globally indexable encoding sequence with simple calculation, fast system speed, and high work efficiency The generation method and its application

Method used

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  • Producing method capable of global indexing coding sequence and uses thereof
  • Producing method capable of global indexing coding sequence and uses thereof
  • Producing method capable of global indexing coding sequence and uses thereof

Examples

Experimental program
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Embodiment 1

[0034] With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, a kind of generation method of maximum global index coding sequence comprises the following steps:

[0035] (1), given code set: P={c 1 , c 2 , c 3 ,... c p}, p≥3, the number of codes in the coding sequence P p, c p Represents a specific physical value code, the code word length parameter k, k is an integer greater than 1;

[0036] (2), for the set P, generate a k-ary code word set W, the k-ary code word is a code sequence string with a length of k, and the set W contains p(p-1) (k-1) a k-ary code word;

[0037] (3), arrange the codewords in W from small to large to form a set V; select the p-1th codeword in V as the initial code segment of the coding sequence S, and then divide the p-1th codeword from Deleted from the W set;

[0038] (4), all the codewords starting with the last k-1 unit codes in the S sequence in the set V are selected, and the largest codeword is connected to S to form a new sequence to replace...

Embodiment 2

[0071] Referring to FIGS. 1 to 12 , the largest globally indexable encoding sequence generated in Embodiment 1 can be applied to fields such as three-dimensional computer vision, and can realize high-efficiency implementation technologies. For example, in a vision system, refer to FIG. 4 , where 1 denotes a projector modulator, 2 denotes a camera imaging plane, and 3 denotes a detected object. The coded sequence can be modulated into a colored striped light pattern and projected into the scene through the projector 1, and a camera 2 is used to detect the image irradiated by the coded sequence on the surface of the object 3, and each pixel point can be interpreted by analyzing the code distribution The corresponding projection coordinates, and then using the system calibration parameters (ie, the perspective transformation matrix of the camera and the projector), a 3D computer can be used to measure the 3D coordinates of each visible point in the scene. Since the system only ne...

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Abstract

This invention relates to one generation method for whole index codes sequence, which comprises the following steps: giving codes set as P={c1, c2, c3, ...cp}, p>=3 with cp for special physical values codes with k for code length; generating k element set w ranking as sizes to form set V and to select p-1 code as initial codes and to delete p-1 code; using the last k-1 unit code as initial one in set V and selecting maximum codes into S for connection and adding the last unit code into S and to delete this code; repeating above steps till all codes in set V into S sequence to form one longest whole index codes sequence.

Description

(1) Technical field [0001] The invention relates to a generation technology of a code sequence capable of global indexing for the realization of three-dimensional computer vision, in particular to a method for generating the code sequence capable of the longest global index and its application. (2) Background technology [0002] Coded structured light 3D vision system can usually achieve high measurement accuracy and low equipment cost. Its principle is to replace a stereoscopic camera with a pattern projector. The projector emits a set of coded light templates and projects them on the surface of the object. After another camera detects the image reflected by the surface of the object, it can use the principle of triangle to perform three-dimensional reconstruction. Compared with the traditional binocular stereo vision method, since this external light projection device is used to actively emit some kind of energy, that is to say, they detect the scene in a specific way ins...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00G01B11/24G06T9/00
Inventor 陈胜勇
Owner ZHEJIANG UNIV OF TECH
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