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Camera calibration method and apparatus using a color-coded structure

A color coding, camera calibration technology, applied in image coding, color TV components, color TV, etc., can solve problems such as data collection interference

Inactive Publication Date: 2015-09-09
THOMSON LICENSING SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When encountering low-level processing aimed at line evaluation to detect a bundle of lines, line crossings of the checkerboard can cause a non-negligible disturbance to the data collection

Method used

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  • Camera calibration method and apparatus using a color-coded structure
  • Camera calibration method and apparatus using a color-coded structure
  • Camera calibration method and apparatus using a color-coded structure

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Embodiment Construction

[0033] figure 1 A preferred embodiment of a camera calibration method is schematically shown, the method comprising: receiving an image (10) from a camera in which a color-coded structure is captured, wherein the color-coded structure comprises at least two grouping patterns; determining a plurality of coordinate points (11) associated with the color-coded structures in the image; and performing camera calibration (12) using the coordinate points. The color coding structure may be any kind of structure comprising at least two sets of patterns with different color channels. For example, the color-coded structure may be a color-coded map displayed on a 2D surface captured by a camera. Similarly, the set of patterns may be any kind of pattern, eg parallel lines or parallel stripes.

[0034] Preferably, as figure 2 As shown, the method further comprises differentiating at least two sets of patterns (13) of the color-coded structure, thereby separately determining a subset of c...

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PUM

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Abstract

A method and an apparatus (30) for camera calibration using a color-coded structure are described. The camera calibration method comprises: receiving (10) from a camera an image, in which a color-coded structure is captured; determining (11) a plurality of coordinate points in the image; and performing (12) camera calibration using the coordinate points. The color-coded structure includes at least two sets of patterns in different color channels.

Description

technical field [0001] A method and device for camera calibration are presented, in particular a method and device for camera calibration using a color-coded structure. The technical field denoted camera calibration gathers algorithms and techniques aimed at characterizing the mathematical models used to describe the image formation process of a camera. In addition, a computer-readable medium suitable for the method and apparatus is also proposed. Background technique [0002] A fundamental need for camera model evaluation (i.e., camera calibration) is an input dataset with an error-free correspondence between the 3D coordinates of some point in the real world and its projection on a calibration image or within a set of calibration images. This input data set can generally be obtained by capturing calibration objects on the image and extracting the correspondence from them [I]. Most camera calibration algorithms proposed in the literature and available on the market are ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T9/00
CPCG06T2207/20156G06T2207/20136G06T2207/20221H04N1/64G06T5/006G06T7/0085G06T2207/10024G06T7/80G06T7/13G06T7/181G06T5/80H04N9/646H04N17/002H04N25/67G06T2207/10004
Inventor 洛伦佐·索尔吉安德烈·布什威斯基
Owner THOMSON LICENSING SA