A Method of Building Image Matching and Fusion Based on Contour Extraction
A technology for contour extraction and buildings, applied in the field of image processing, can solve problems such as not extracting straight line features of buildings, and achieve the effects of improving user interest, optimizing extraction effects, and increasing user stickiness
Active Publication Date: 2021-08-31
NORTHEASTERN UNIV LIAONING
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] Existing image similarity calculation algorithms such as color histogram, perceptual hash, etc., consider the overall characteristics of the image, but do not extract the straight line features of the building. Therefore, on the issue of image similarity calculation between historical photos of buildings and new photos, There is room for improvement
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0052] The present invention will be described in detail below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0053] Such asfigure 1 As shown, the present invention provides a method for building image matching and fusion based on contour extraction, including:
[0054] 1) Obtain historical photos of buildings and preprocess them;
[0055] The preprocessing of the historical photos includes: adjusting the size ratio of the historical photos, then converting the historical photos into grayscale images, and finally performing filtering and smoothing processing on the grayscale images.
[0056] 2), carry out contour extraction to preview photo and preprocessed historical ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method for matching and merging building images based on contour extraction, which includes: preprocessing historical photos; performing contour extraction on preview photos and preprocessed historical photos to obtain the contours of historical photos and preview photos Fig. Extract the straight lines from the contours of the two photos, and use the straight line matching algorithm to pair the straight lines of the historical photos and the preview photos according to the straight line features to obtain the optimal matching team set; Calculate the angle to get two included angle matrices, and calculate the similarity of the included angle matrix to get the similarity between historical photos and preview photos; perform image fusion processing on preview photos and historical photos, so that similar photos and historical photos are displayed at the same time In a photo, the historical building can be matched with the existing preview photo in real time, and the degree of matching between the two building images can be judged, making the comparison of architectural photos more accurate and faster.
Description
technical field [0001] The invention relates to the field of image processing, in particular to a method for building image matching and fusion based on contour extraction. Background technique [0002] With the rapid development of the city, the buildings located in the same place and the surrounding scenes have undergone huge temporal and spatial changes. The protection of urban historical buildings has become a prominent social issue. Among them, it is difficult to compare and link the current state of the building with the historical state, which is the main reason that hinders the public from participating in the protection of historical buildings. With the development of computer vision and mobile computing technology, the ability of mobile devices to analyze and understand images has been greatly enhanced. It is a feasible solution to build novel image processing applications on mobile devices to promote user participation. [0003] However, a city building contains...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00G06T7/13G06T7/33G06T7/90
CPCG06T7/0002G06T2207/10004G06T2207/20221G06T2207/30184G06T7/13G06T7/33G06T7/90
Inventor 吴刚李家霖王兆鹤于之惠王波涛刘辉林乔百友韩东红
Owner NORTHEASTERN UNIV LIAONING