Rating System Of Corrosion Based On Computer Vision

According to the rating criterion of coating corrosion, based on the advantage of the image processing and hige-speed calculating-ability of computer language, this system is developed with analyzing the information in the coating surface image for detection of product. This paper puts emphasis on the technical research of image recognition, and utilizes the image'features about color and morphology of corrosion zone, which can recognize the corrosion grade of coating. The presented method is useful for promoting the application of computer vision technology and image theoretics in corrosion science and the digitalization of corrosion characteristic information, and the randomicity and subjectivity of manual eyeballing are effectively avoided. The paper proposes a new method of evaluating of material corrosion image.The gathering and processing of coating corrosion image are studied and the system's overall design is put forward. It includes the parts of acquiring image, image's pre-processing and image recognition. A new method of evaluating of material corrosion image based on computer vision is built up. The theory of image processing is combined to practice, the programme of hardware and software which are used in rating system of corrosion is put forward.Processing of coating corrosion image by filter. In order to show the corrosion character clearly the image is pre-processing by median filtering. The rating method of protection based on morphology of coating corrosion zone in sample are studied. These arithmetics by computer vision technology and image recognition technology are applied to recognise information of corrosion features in coating and compute corrosion feature parameters. It includes: enhancement of image, segmentation of image, computation of corrosion feature parameters. The rating method of appearance based on color of coating corrosion image are studied. An algorithm based on color of corrosion image is presented, which extracts color histogram as characteristic vector and matches the similarity of image with the algorithm of EMD distance.The automatic rating system of coating corrosion based on computer vision, the makeup and recognizing methods are studied, and the rating software are developed in this paper. The paper builds up a integrated rating system of coating corrosion.