An Image Mosaic Algorithm based on Coordinate Transformation

2018 International Conference on Advanced Materials, Intelligent Manufacturing and Automation

材料科学;机械制造;运输工程

Liu, Lingyun^1 ; Wu, Yuemin^1 ; Luo, Min^1 ; Ma, Bin^1

School of Electric and Information Engineering, Hubei University of Automotive Technology, Shiyan

442002, China^1

关键词: Acquisition systems;    Backward mapping;    Co-ordinate transformation;    Geometric measurements;    High resolution;    Image distortions;    Image mosaic algorithms;    Vision measurement;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/382/5/052001/pdf
DOI  :  10.1088/1757-899X/382/5/052001

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In this paper, an image mosaic algorithm is presented to realize the high-precision geometric measurement of large parts through the vision measurement. First, the visual acquisition system moves along the planned trajectory path and grabs the high-resolution, small-viewing field image sequence successively, then a backward mapping algorithm is adopted to resample the above-mentioned images in the normalized focal plane in order to eliminate the image distortion. Finally, with the aid of pose transformation relations, the mapping images are precisely tiled into a larger field of view image. This image mosaic algorithm has high mosaic accuracy and is suitable for a wide range of applications due to its independency on characteristics information of the image to be mosaicked. Experimental results show that the algorithm has good application value.