Thursday, November 30, 2017

Textile defect detection using OpenCV | 使用OpenCv檢測紡織品瑕疵

textile defect detection
This is a sample display the result of textile defect detection via OpenCV, you can slide left/right to check image before and after.

Get the result like that was not so hard, just tune parameters and keep patient, I had put my code on Github - Defect Detection Demo, you can test it by yourself.
要得到這樣的結果不難,只需要調參數跟耐心,我已經把程式放到。Github上的Defect Detection Demo,你可以自己試試。

Thursday, November 23, 2017

OpenCV DNN speed compare in Python, C#, C++

Last time I tried SSD on Python + OpenCV DNN, this time I will implement same test using C# and C++ to test performance and the difficult of implement.

To be fair, I will use same model and same test image on those 3 tests, model will be "VGG_VOC0712Plus_SSD_512x512_ft_iter_160000.caffemodel" from here (07++12+COCO: SSD512), image will be one picture I shot at Bail few year ago.

Friday, November 17, 2017

[Python] SSD (Single Shot MultiBox Detector) first try with OpenCv DNN | 在 OpenCv DNN初試 SSD


SSD - Single Shot MultiBox Detector is an object detection model that has comparable accuracy with region proposals model(e.g. Faster RCNN) and is much faster. This time I will test SSD with Pyhton OpenCV DNN and check the result.
SSD - 單發多框偵測器(亂翻)是個在準確率上與候選區域模型(如Faster RCNN)不相上下,但速度更快的物體偵測模型。這次我將在Python OpenCV DNN環境下測試SSD看看其結果。

First, download SSD model from here, if you want to do train/evaluate just follow the instruction at same page, we only use model for detecting objects now.

Friday, November 10, 2017

[C#] Solve find difference game by OpenCv | 用OpenCv來玩找出差異的遊戲

This is a tiny side project using OpenCv(actually, OpenCvSharp) Background Subtraction methods to solve find difference game's image.
這是一個用OpenCV(實際上是OpenCvSharp)的Background Subtraction功能來解找出差異遊戲圖片的小專案。

0x8007042B - 0x2000D error while upgrading Windows 10 | 升級Win10時發生0x8007042B - 0x2000D錯誤


Recently I am updating Windows 10 Fall Creators Update, but when it auto reboot and install to 27%, the update will stop and restore to previous version. After login in windows, the error message was that :
最近我在更新Windows 10秋季創作者更新,但當他自動重開然後安裝到27%時,更新會停止然後還原到上個版本。當登入windows後,錯誤訊息如下:
0x8007042B - 0x2000D
The installation failed in the SAFE_OS phase with an error during MIGRATE_DATA operation

Friday, November 3, 2017

[C#] Breakpoint will not currently be hit. No symbols loaded for this document.


Recently I was modify an old WPF application, but when I am debugging, it shows a message on my breakpoint told it can't work.
Breakpoint will not currently be hit. No symbols loaded for this document.

Googled it, a lot of solutions about this question, like this "Breakpoint will not currently be hit. No symbols loaded for this document." on codeproject , but no one work on me.
Google了一下,很多關於這問題的解法,像是codeproject上的"Breakpoint will not currently be hit. No symbols loaded for this document."這篇,不過沒有一個解法對我適用。