Image inking and fusing method and system based on histogram feature point registration

A histogram and feature point technology, which is applied in the field of image color uniformity and fusion based on histogram feature point registration, can solve the problem of uneven brightness and achieve the effect of improving color uniformity and fusion effect

CN104182949AActive Publication Date: 2014-12-03SHENZHEN JIMUYIDA TECH CO LTD
4 Cites 25 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2014-12-03

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses an image inking and fusing method and system based on histogram feature point registration. The method comprises the following steps: according to image brightness histogram characteristics, extracting histogram extremum points, and adopting one-dimensional Gaussian to smoothly inhibit the local noise points of a brightness histogram; meanwhile, constructing matching relationship among the histogram extremum points in a way that a matching cost function is used to eliminate a matching matrix M; and taking the matched histogram extremum points as histogram characteristic points. The histogram characteristic points are utilized, and image brightness is corrected by adopting the corresponding brightness values of the histogram characteristic points of an image overlapping region. The image which exhibits a big visual angle and big close-range chromatic aberration can be subjected to hue difference processing, hue differences of a plurality of image overlapping regions and non-overlapping regions can be automatically eliminated, and effects of local zone hue balance of the image and the integral hue balance of a panorama image of spliced streetscape can be achieved.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of computer vision and pattern recognition, in particular to an image color uniformity and fusion method and system based on histogram feature point registration. Background technique

[0002] Image color uniformity and fusion methods are one of the important research topics in computer vision and pattern recognition in image processing. In recent years, with the rapid development of street view products, panoramic image color uniformity and fusion technology has been widely used. In the process of stitching panoramic images, it is not only necessary to handle the geometric relationship between adjacent images, but also to ensure that the overall brightness of the stitched panoramic images is consistent, and the brightness transition between images is uniform. Therefore, the study of color uniformity and fusion methods between images is of great significance to the results of panoramic image stitching and its applica...

Examples

Embodiment Construction

[0064] The present invention adopts a color uniform method based on the registration of histogram feature points to solve the problem of color tone difference during image splicing. The method extracts the extreme points of the histogram according to the characteristics of the image brightness histogram, and uses one-dimensional Gaussian smoothing to suppress the brightness histogram. Local noise points; at the same time, use the matching cost function to eliminate the matching matrix M to construct the matching relationship between the extreme points of the histogram, and use the matched extreme points of the histogram as the histogram feature points. Using the histogram feature points, the brightness of the image is corrected by using the brightness values ​​corresponding to the histogram feature points in the overlapping area of ​​the image.

[0065] In order to better understand the technical solution of the present invention, the present invention will be further described...