博文

First Applications with QT

2018-1-26 00:04

1. Empty qmake Project 2, Qt Widgets 3. Layout 4. Menu bar Two approaches to connecting slot and signal: 1) coding in mainwindow.cpp and 2) manually connecting signal (triggered) and slot in mainwindow.ui. (Icons can be downloaded at http://www.iconarchive.com/ ) 5 ...

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Build Qt and Configure Opencv with VS2015

2018-1-20 07:13

It's been a long time since Qt and OpenCV frameworks were introduced to the opence source community, but it is not until recently peopole come to realize the benefits of combing them together, and such combination becomes increasingly popular among computer vision practitioners. This post is to ...

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Revisit to Canny Edge Detector

2017-11-27 02:38

Principles According to Canny (1986), three criteria for edge detection are； 1. Low error rate of detection. It should detect all edges, and nothing but edges. 2. Localization. The distance between actual and detected edges in the image is to be minimized 3. Single response. It should not ...

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Hough circle detection

2017-11-24 11:54

Principles : 1) Edge detection (gradient based) necessary for reduced hough transform computation 2) Initializating hough paramter space, i.e., 3D accumulator matrix A (x, y , r) 3) Looping through all circles centered at the foreground pixels to obtain circle point indices 4) Finalizing the ...

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Correlation coefficient v.s. Determination Coefficient

2017-11-12 02:09

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