Automatic grading method of pomelo fruit according to the shape and size is urgently needed in the industry since the work mainly depends on artificial judgment currently. In this research. a method. which detected the vertical and horizontal size of pomelo by using contour coordinate transformation fitting. https://safeersappliancers.shop/product-category/rangemaster-82030-elite-se-110cm-dual-fuel-range-cooker-with-matte-pan-stands/