公开(公告)号：US20180035047A1

公开(公告)日：2018-02-01

申请号：US15223389

申请日：2016-07-29

Applicant: MULTIMEDIA IMAGE SOLUTION LIMITED

Inventor： Hua LEI ,  Jin WANG

IPC: H04N5/232 ,  G06T3/00 ,  G02B13/06 ,  H04N5/265

CPC classification number: H04N5/23238 ,  G02B13/06 ,  G06T3/0018 ,  G06T3/4038 ,  G06T2207/20221 ,  H04N5/265

Abstract: The present invention is to provide a method for enabling an electronic device to read at least two images taken from different positions by a digital camera mounted with a fisheye lens; acquire internal and external parameters of the fisheye lens corresponding to the different positions as well as the vignetting coefficient for eliminating the vignetting on the images; perform exposure compensation and color calibration on the images for letting them have consistent brightness and hues; project the images onto a spherical surface and spread out the spherical surface to form a two-dimensional spread-out picture based on the parameters; register the overlapped images projected on the two-dimensional spread-out picture and adjust the offset of corresponding pixels thereof, register and adjust the brightness and hues of the overlapped images into consistency; and fuse overlapped images together to produce a 360-degree spherical panorama without having any noticeable stitching seam between the images.

公开(公告)号：US20180061006A1

公开(公告)日：2018-03-01

申请号：US15247974

申请日：2016-08-26

Applicant: MULTIMEDIA IMAGE SOLUTION LIMITED

Inventor： Hua LEI ,  Jin WANG

IPC: G06T3/40 ,  G06T5/50 ,  G06T7/00 ,  G06T3/00

CPC classification number: G06T3/4038 ,  G06T3/0012 ,  G06T5/50 ,  G06T7/003 ,  G06T7/337 ,  G06T2207/10004 ,  G06T2207/20221 ,  G06T2207/30201

Abstract: The present invention is to provide a method for ensuring perfect stitching of a subject's images in a real-site image stitching operation, which enables an electronic device to read two real-site images which are taken respectively of different parts of the same site and each of which has an overlap area of a common subject; to determine and choose an optimal stitching path bypassing the subject; to construct a mask diagram such that, within a difference diagram of the overlap areas, the farther a pixel on one side of the optimal stitching path is from the optimal stitching path, the greater the pixel's value, and the farther a pixel on the other side of the optimal stitching path is from the optimal stitching path, the smaller the pixel's value; and to stitch and fuse the overlap areas together through a fusion algorithm, with the mask diagram serving as a weight.