Research On Location Algorithm Of Rectanular Background Area In Image

With the rapid development of WeChat application,sending pictures to users on the WeChat public account has become a focal point of WeChat development.Most of the time,we send not only a simple picture,but on the basis of the original picture,we embed a two-dimensional code picture with user information,and then send the combined picture to the user.At this time,we have to consider a question,that is,how newly embedded two-dimensional code picture can not hide the information contained in the original picture itself.In the current development,developers can only artificially calculate and specify the position of the newly embedded image information.Such processing greatly reduces the flexibility,effectiveness,and feasibility of the project,especially in large-scale development,the workload will be very large,and it is unavoidable to make mistakes.Therefore,this paper proposes a location algorithm of rectangular background area in digital image,which realizes the positioning of continuous rectangular background area in the image,and applies it to the development of WeChat public account,which has important practical significance for the development of WeChat public account.At present,in the research of digital image positioning,most of the research work is the detection and positioning of objects in digital images.In addition to the high complexity and low efficiency of the algorithm itself,we need to locate the background area based on the detected object area.Finally,although the positioning of the background area is achieved,but the background area found is usually scattered in the original carrier image,and our demand is mainly to find a continuous rectangular background area and embed a two-dimensional code image in the area,thus making the two-dimensional code image information does not obscure the original carrier image information.Therefore,In order to find such a continuous rectangular background area,we need to continue to locate the scattered image background area,which improves the complexity of the work and greatly reduces the speed of our work and the efficiency and quality of the service.From this,it can be found that such processing is not suitable for adding a two-dimensional code to the picture sent by the WeChat public account.In order to solve the above mentioned problems,this paper proposes a new rectangular background area location algorithm in digital image for the first time.The algorithm mainly makes some preprocessing operations such as gray conversion,edge detection,and dilation operations on the image,and then combines the image segmentation algorithm with the sliding window search method to locate the image.This paper mainly elaborated the basic idea and steps of the algorithm,and carried out the repeated simulation experiment on the data set,obtained the more ideal result,verified the feasibility of the algorithm.At the same time,the result shows that the average positioning accuracy rate of the algorithm reaches 97.6%,which proves the excellent performance of the algorithm.