Research On Shape Preservation And Parallax Processing For Image Mosaic

With the rapid development of computer technology,more attention has been paid to the field of computer vision.At the same time,people have higher and higher requirements for some technologies in the field of vision.Image splicing technology,as a kind of commonly used image processing techniques,because it can be employed as post-processing to make up for the inadequacy of filming equipment,can meet the demand of research field for some of the image itself,the current image splicing technology has been widely used in medical imaging,virtual reality,military,and remote sensing images,and other fields,and plays a vital role.Image mosaic technology mainly includes image registration and image fusion.The registration of the existing image Mosaic method pays attention to the alignment accuracy of the overlapped region,and leads to the problem of image deformation.Although the existing image splicing methods have high alignment accuracy in overlapping areas,the projection deformation makes the splicing effect not ideal.Therefore,it is very important to seek a method which can improve the alignment accuracy of overlapping areas and restrain the generation of projection deformation.In order to solve this problem,a new hybrid transformation model is proposed,which uses the properties of similar transformation to constrain the degree of deformation of the projection.In this paper,the weight coefficient is defined to combine the projection transformation and similar transformation,and the weight coefficient is determined by the position of feature points.The hybrid transformation model proposed in this paper can achieve high accuracy in the alignment of overlapping areas.The overall shape of the image and the detailed information of the image itself can be well maintained,taking into account the advantages of projection transformation and similar transformation.Parallax is the difference in the direction of the same object from two positions at a certain distance.The image to be spliced with large parallax is processed by traditional image splicing technology,which will produce some phenomena that affect the splicing effect,such as artifacts and blur.In this paper,a new image fusion method based on optimal seams is proposed.Combined with the aforementioned features of shape preservation,it can well deal with the Mosaic problem of panoramic image under the large parallax scene,so that the overlapping part of the panoramic image is accurately aligned,the overall shape of the panoramic image is protected,and the Mosaic effect is significantly improved.