The Defect Detection accelerated application is a machine vision application that automates detection of defects in mangoes and sorting in high-speed factory pipelines by using computer vision library functions. Defect detection application detects defects in a mango.
The Application has following pipelines
Gaussian Otsu pipeline, which includes functions xf::cv::custom-bgr2y8,
xf::cv::GaussianBlur, xf::cv::OtsuThreshold.
Preprocess pipeline, which includes functions xf::cv::Threshold, xf::cv::fw_cca.
CCA custom pipeline, which includes functions xf::cv::rev_cca, xf::cv::pass_2.
In Gaussian Otsu pipeline, BGR input image is converted to custom y8 format and the output is processed through GaussianBlur and OtsuThreshold which computes threshold value to mark the defects.
In Preprocess pipeline contains xf::cv::Threshold function and xf::cv::fw_cca is moved to preprocess pipeline to improve performance where it processes the image in forward direction to get information on edge between mango pixels and background pixels.
The CCA custom pipeline includes xf::cv::rev_cca, which processes the image in backward direction and xf::cv::pass_2 which adds both forward and backward passes and gives the number of defect pixels.