Research Of Image Process In Log Volume Measurement

At present, almost all company count log volume one by one by workers or laser light, it is laborious, low effective, also counting by workers may cause high error and high cost. So, these manufactories desire a cheap counter and volume-meter. From the first of 1990s, by using computer vision, studies of this area had been begun. Although a bit progress had been got since then, there is much to do if it is used at spot in factory. This study do some research on theory, the product will have a good future.Based on digital image process, the log volume-meter technology is born to conquer the drawback of previously methods. It has many merits such as low cost, easy operation, and high efficiency. The research of log volume-meter system not only has the sense of theory, but also has bright market prospect.In this paper, the author tries to measure the log volume of image by making use of computer vision. The main research includes the following area: image acquisition and display, pre-process, segment of object, measurement of log quantity and volume. During the image process, whether can we get an ideal result depend on the pre-process of image which is the foundation of the whole system. In this paper, the algorithm threshold the object through the specified color space, and mend the image through labeling algorithm. We can get a acceptable result as expected. A new segmentation method based on quasi-circular assumption is presented. This method require a good binary image, if it exist concave, the aggregated objects will be segmented and recognized correctly and the error is lower, otherwise, it may lead to error result. Finally, the software counts the min diameter of each log from the pre-process image. After erosion and labeling of image, it can gain the quantity of the log. This is a non-contact measurement system.This paper finally presents the experiential result and error analyse. I analyse the practicability of the system from the view of application, and provide suggestions of further development which pave the way for the application of the system.