Some professional level of the cufflinks

Calculate the bounding box broadside and the ratio of the long edge and long edge pixels, and these two parameters as a benchmark to judge thread. 3.3.2.1 Bounding Box Bounding Box [241 is the basic problem in computational geometry. Some professional level of the cufflinks
 Based on the effect of OSTU operating a in Figure below. Can be seen from the figure, the sub-method is much better than the other methods on the original image texture information better performance. But there are still some stripes lost, and the longest strip thread is broken into two parts. At this point based on the LoG operator binary gradient map for global binarization operating, and get better. Results shown in Figure below. They may choose to send mens cufflinks to the husband-to-be.  This article uses a combination of approaches of Sobel operator and LoG operator binarization binarized image. 30 Chapter 3 of the Journal of Zhejiang University Thread Detection thread based on the direction of statistical analysis thread analysis for binary image contour. By observing the image of pearl cufflinks thread, you can find the thread of pearl cufflinks are basically showing the strip, close to a straight line.
Can be a natural idea is to judge whether it is threaded through the direction of a point on the outline of the statistical massive texture. How to get the best effect of the cufflinks?
The so-called bounding box is surrounded by a known polygon polygon, commonly used in collision detection. Oriented Bounding Box (of OBB) that contains the target object, and any minimum cuboid relative to the axis direction, is a widely used type of bounding box. The direction of the bounding box is characterized by any of its direction, which makes it the shape characteristics of the object was surrounded as closely as possible to surround the object. Oriented bounding box calculation is relatively complex, the key is to find the best direction, and to determine the minimum size of the bounding box surrounded by objects in this direction. Assumptions in the model basic geometric elements of the triangle, the i-th triangle designated P ', q',, ', then model the mean of U (the center of the bounding box) and the covariance matrix C is calculated as follows. She in a mall caught a fancy of a diamond mens cufflinks of stylish design with the sign of PD900.