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Full-focus synthetic aperture perspective imaging method based on multilevel iteration visualization optimization

A technology of synthetic aperture and imaging method, which is applied in image analysis, image data processing, instruments, etc., and can solve problems such as poor imaging effect

Active Publication Date: 2013-07-10
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0004] In order to overcome the shortcomings of poor imaging effect of the existing energy-minimized pixel-labeled synthetic aperture imaging method, the present invention provides a full-focus synthetic aperture perspective imaging method based on multi-level iterative visualization optimization

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  • Full-focus synthetic aperture perspective imaging method based on multilevel iteration visualization optimization
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  • Full-focus synthetic aperture perspective imaging method based on multilevel iteration visualization optimization

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Embodiment Construction

[0033] 1. Synthetic aperture imaging and acquisition of MCD images.

[0034] This part includes three parts: calibration of camera parameters, including calibration of internal parameters and external parameters; acquisition of color information and maximum color difference at any point on the focal plane; generation of composite images and MCD diagrams.

[0035] Calibration of camera parameters: Use the calibration method based on the two-dimensional calibration board to calibrate the internal parameters of the cameras in the camera array (105 cameras are used in this patent), and then use the acquired internal parameters to calibrate the external parameters of the cameras;

[0036] Obtain the color information and the maximum color difference of any point on the focal plane: For each pixel on the virtual focal plane (640x515 used in this patent) in a given depth range, use the camera parameters to find its color at all effective camera angles of view The pixel coordinates on...

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Abstract

The invention discloses a full-focus synthetic aperture perspective imaging method based on multilevel iteration visualization optimization. The technical problem that an existing pixel mark synthetic aperture imaging method based on energy minimization is bad in imaging effect is solved. The technical scheme is that a scene is firstly divided into a plurality of visible layers, an iteration method is used for designing an extensive synthetic aperture optimization frame, the surfaces of a visible object and a shielded object are rebuilt under a free depth, a multilevel iteration energy minimization optimization mode is used, and in a randomly-given depth range, a full-focus image is generated. Data of the method in a Stanford data base and a UCSD data base are detected, and the detection results show that full-focus imaging which is clear and close to reality is obtained through the method.

Description

technical field [0001] The invention relates to an all-focus synthetic aperture perspective imaging method, in particular to an all-focus synthetic aperture perspective imaging method based on multi-level iterative visualization optimization. Background technique [0002] Perspective imaging based on camera array is an important research topic in the field of computer vision, and it has a wide range of applications in hidden target imaging, detection, recognition and tracking, and free depth viewpoint imaging. The current synthetic aperture imaging methods mainly include: plane + parallax based synthetic aperture imaging method and energy minimization based pixel labeling synthetic aperture imaging method. [0003] The document "Synthetic Aperture Imaging using Pixel Labeling via Energy Minimization, PR, 46(1): 174-187, 2013" discloses a synthetic aperture imaging method based on energy minimization pixel labeling. Different from the traditional synthetic aperture imaging m...

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Application Information

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IPC IPC(8): G06T7/00
Inventor 杨涛张艳宁仝小敏马文广
Owner NORTHWESTERN POLYTECHNICAL UNIV
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