1. Description
When processing images with opencv, the source of the image is read from the video in most cases. The video can be a locally saved video, or a real-time video captured by a local camera or a network camera.
Show results:
opencv read video
2. Concrete operation
Regarding the reading of the video, in fact, each frame of image is loaded from the video and displayed on the QLabel control. The reading of each frame is controlled by a timer, that is, it is read frame by frame within the interval time. Fetching image frames, if you don't use a timer for the operation, there may be problems.
UI interface design:
2.1 Read local video files
widget.h:
#ifndef WIDGET_H