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How to detect vertical lines drawn by hand ?

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T O P I C R E V I E W
jccruz	Posted - Nov 28 2018 : 19:33:50 Dear all! This image is part of an psychology assessment that I need to automate the analysis. Each vertical lines is called "palos". I need to detect all palos and be able to count them. After that, I need to know the max distance between these palos. Which palo is the largest and which is the smallest. How can ImageEn or IEVision than help me with these chalenge? Thanks Jose Carlos JCC
7 L A T E S T R E P L I E S (Newest First)
yogiyang	Posted - Nov 30 2018 : 06:07:22 Hello, if all else fails then try out Pattern Matching demos of IEVision. Though I have not tried it out but I think that will give you more accurate results. Regards, Yogi Yang
wesleybobato	Posted - Nov 29 2018 : 15:27:26 Hi Jose! You can try too! https://www.imageen.com/help/TImageEnProc.ConvertToGray.html https://www.imageen.com/help/TImageEnProc.RemoveNoise.html Contrast https://www.imageen.com/help/TImageEnProc.Contrast.html https://www.imageen.com/help/TImageEnProc.Contrast2.html https://www.imageen.com/help/TImageEnProc.Contrast3.html Reduce Color https://www.imageen.com/help/TImageEnProc.ConvertTo.html Kind regards.
xequte	Posted - Nov 29 2018 : 14:59:26 Hi Jose Also, ensure you are prepping the image by increasing contrast and reducing colors. Nigel Xequte Software www.imageen.com
jccruz	Posted - Nov 29 2018 : 10:34:15 Hello Wesley and Nigel! Thanks for your prompty answer! Yesterday I tried BlobDetector and SeparateObjects but it did not work. I tried Line Detection too, but not sucess. Yes Wesley, I need count the "palos" by period. 152 means that there are 152 palos (vertical lines) in the first period (of 1 minute). But I can select before detection to define a region. What I need is a way to automaticaly detect and draw a vector exact over all palos in the region I selected. If I have the vectors I can make any calculation. Thanks again Jose Carlos JCC
wesleybobato	Posted - Nov 29 2018 : 05:29:37 Hi Nigel Are there regions that need to be isolated as it can do this? He should stop counting every time he finds a number. Will he need the OCR to identify these correct numerical characters? because it needs to compare the amount of "PALOS" with the number written
xequte	Posted - Nov 28 2018 : 21:47:49 Hi I would also try: ImageEnView1.Proc.SeparateObjects(); https://www.imageen.com/help/TImageEnProc.SeparateObjects.html And TIEVisionBlobDetector https://www.imageen.com/help/TIEVisionBlobDetector.html There are compiled demos for both on the Demos page. Nigel Xequte Software www.imageen.com
wesleybobato	Posted - Nov 28 2018 : 20:37:28 Hi Jose I know this psychological test, much used by clinics of psychology in DETRANs of Brazil. Have you tried using OCR? this is quite complex, and you forgot to explain that the numbers 152 and 140 is a pause ie you need to isolate regions from counts of PALOS. Now calculations of distances and sizes are there many techniques have you explored all examples of IEVision? https://www.imageen.com/demos/index.html Drop the examples and take a test and share your results, I'm sure this is a great start. Kind regards.