US 8,180,145 B2Granted

Method for producing image with depth by using 2D images

AssigneeIndustrial Technology Research Institute

InventorsJeng-Feng Wu, Wen-Chao Chen, Cheng-Yuan Tang

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Abstract

A method for producing an image with depth by using 2D image includes obtaining a set of internal parameters of a camera. The camera takes at least a first and a second 2D images with a small shift. The first 2D image has N depths, and N≧2. Several sets of external parameters of the camera corresponding to the 2D images are estimated. A 3D information respectively corresponding to the N depths of the first 2D image at each pixel or block is calculated. A proper depth of each pixel or image block is determined. Through the internal parameters, the external parameters, and the N depths, each pixel or image block of the first 2D image is projected onto N positions of the second 2D image, so as to perform a matching comparison analysis with the second 2D image, thereby determining the proper depth from the N depths.

Claims16

Dependent claims

A method of producing an image with depth by using 2D images, implemented in an image processing apparatus, comprising:

providing a set of internal parameters of a camera and a set of 2D images to the image processing apparatus, wherein the image processing apparatus performs:
taking at least two 2D images from the set of 2D images with a small shift when taken by the camera, using one as a first 2D image, and the other one as a second 2D image, wherein the first 2D image has N depths, and N≧2;
estimating a plurality of sets of external parameters of the camera respectively corresponding to the 2D images;
calculating a pixel 3D information for each pixel of the first 2D image respectively corresponding to the N depths;
and
determining a proper depth of each pixel, wherein through the set of internal parameters, the plurality of sets of external parameters, and the N depths, the pixels of the first 2D image are projected onto N positions of the second 2D image, so as to perform a matching comparison analysis with the second 2D image, thereby determining the proper depth from the N depths.

3 more elements

A method for producing an image with depth by using 2D images, implemented in an image processing apparatus, comprising:

providing a set of internal parameters of a camera and a set of 2D images to the image processing apparatus, wherein the image processing apparatus performs:
taking at least two 2D images from the set of 2D images with a small shift when taken by the camera, using one as a first 2D image, and the other one as a second 2D image, wherein the first 2D image has N depths, and N≧2;
estimating a plurality of sets of external parameters of the camera respectively corresponding to the 2D images;
cutting the first 2D image into a plurality of image blocks;
calculating a block 3D information for each pixel of the first 2D image respectively corresponding to the N depths;
and
determining a proper depth of each image block, wherein through the set of internal parameters, the plurality of sets of external parameters, and the N depths, the image block of the first 2D image are projected onto N positions of the second 2D image, so as to perform a difference analysis with the second 2D image, thereby determining the proper depth from the N depths.

4 more elements

Dependencies are inferred from the claim text.