Click on the "Xiaobai Learns Vision" above, select to add "Star" or "Top" Heavyweight content, delivered first time Author: ANKIT SACHAN Compiler: ronghuaiyang Introduction This article analyzes the pros and cons of Canny and provides the process of using deep learning for edge detection in OpenCV. There is a code link at the end. In … Read more
Click on the "Xiaobai Learns Vision" above, select "Star" or "Top" Important content delivered in real time Author丨Rustle@ZhihuSource丨https://zhuanlan.zhihu.com/p/59640437Editor丨Jishi Platform Introduction This article systematically explains the concepts related to edge detection algorithms, supplemented with a large number of diagrams and formulas to help everyone understand various edge detection operators in depth. Before We Begin: This article … Read more
IntroductionIn PLC learning, many people fall into the trap of “piling up instructions”—memorizing the usage of timers and counters but unable to create a stable quiz buzzer. In fact, the quiz buzzer seems simple but hides the core logic of industrial control:signal priority judgment, interlocking to prevent conflicts, and state reset management. Today, we will … Read more
Edge detection is a common requirement in FPGA design, used to detect changes in signals from low to high (rising edge) or from high to low (falling edge). Below are several commonly used FPGA edge detection methods and their detailed explanations. 1. Basic Edge Detection Circuit 1.1 Rising Edge Detection module posedge_detect( input clk, input … Read more
In PLC programming, the positive edge and negative edge are key signal characteristics that trigger logical operations. They are commonly used to avoid signal jitter, achieve precise counting, or control execution order. If not mastered, their usage may lead to program logic confusion, false triggering, or functional failure. The following analysis covers principles, application scenarios, … Read more