Three-dimensional printing image synthesizing method for optical grating

An image synthesis and three-dimensional printing technology, applied in the printing field, can solve the problems of poor three-dimensional visual effect, inconvenient guide rail shooting, high cost of multi-lens cameras, etc., and achieve the effect of convenient process and good three-dimensional effect

Active Publication Date: 2015-04-22
WUHAN UNIV
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AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problems of artificially endowing depth information for single image stereo synthesis, poor 3D visual effect in stereo synthesis of binocular images, high cost of multi-lens cameras required in stereo synthesis

Method used

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  • Three-dimensional printing image synthesizing method for optical grating
  • Three-dimensional printing image synthesizing method for optical grating
  • Three-dimensional printing image synthesizing method for optical grating

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Experimental program
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Embodiment

[0082] The concrete mode of operation of embodiment is as follows:

[0083] It is assumed that there are a total of n disparity images generated in sequence, and they have been arranged from left to right in the order of acquisition. First, vertical stripe sampling is performed on each sequence parallax image, and the segmentation width is set to be one pixel (because the image in the computer is stored in pixels); the pixel in the i-th row and j-column of the k-th sequence parallax image is G i k (j), where 1≤k≤N, 0≤i≤width-1, 0≤j≤height-1, and k, i, j are integers, width is the image width in pixels, and height is in pixels is the image height in units, and the pixel in row i and column j of the synthesized stereo image is F i (j), then according to the principle Figure 5 The corresponding relationship between the pixel columns in the middle, the formula can be obtained:

[0084] F i ( j ) ...

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Abstract

The invention discloses a three-dimensional printing image synthesizing method for an optical grating based on multi-view imaging of a depth transducer and an optical camera. Firstly, a single-lens camera with the depth sensor is used for obtaining a scene optical image and a corresponding depth image under multiple views; secondly, registering is carried out on three-dimensional point cloud under the multiple views, a redundancy space point is deleted, the depth information of a shooting scene is obtained, and a plurality of sequence optical parallax images are obtained according to a method for virtually setting a plurality of equal-interval view points in the three-dimensional space; finally, the optical grating three-dimensional printing image is synthesized according to an optical fiber three-dimensional coding mode. The image processing is carried out only through the technology, the depth information of the scene, the sequence optical parallax images and the optical grating three-dimensional synthesis image finally to be printed can be obtained in sequence, the whole process is convenient and fast, the three-dimensional effect of the optical grating three-dimensional image finally output is good, and the technology plays a significant role in popularization of the optical grating three-dimensional image.

Description

technical field [0001] The invention belongs to the technical field of printing, and relates to a method for synthesizing images of grating stereo printing, in particular to a method of synthesizing images of grating stereo printing based on multi-view imaging of depth sensors and optical cameras. The output grating stereo images can be seen with naked eyes Better three-dimensional effect. Background technique [0002] Three-dimensional printing technology is a special printing technology based on the principle of binocular parallax of the human eye and the optical principle of grating refraction and image division, combined with printing technology to make the content of two-dimensional images appear three-dimensional. The general technological process of lenticular three-dimensional printing is: original manuscript production, plate making, printing and post-press processing. Among them, the acquisition and production of original manuscripts are becoming more and more div...

Claims

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Application Information

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IPC IPC(8): H04N13/00H04N13/02H04N13/04G02B27/22
Inventor 李治江冯谨强曹文冬
Owner WUHAN UNIV
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