Hi Anusha, Number of positive and negative samples are dependent upon an object which is trying to train. Becuase if you try to train small object like rectangle then few positive samples would be enough. If there are more variation in the object which requires hundreds and even thousands of positive samples for like humans. Also, Intel Threading Building Blocks (Intel® TBB) needs to be enabled when building OpenCV so as to optimize and parallelize some of the functions which help to make haar cascade classifier in an optimal way.
Thanks, Geesara On Thu, Sep 15, 2016 at 9:36 AM, Anusha Jayasundara <anus...@wso2.com> wrote: > Hi Geesara, > > > I used opencv-trainecascade function to train a cascade, and there is a > function called opencv-createsamples, we can use this to create positive > data set by giving only one positive image. I used this method to create > the positive data set. but the accuracy of the detection is very low, I > think it is because I used very low-resolution image set. Now I'm trying to > train using mid-resolution image set(300-150). > > Thanks > > On Wed, Sep 14, 2016 at 4:31 PM, Sameera Gunarathne <samee...@wso2.com> > wrote: > >> Hi Geesara, >> >> +1 for suggesting a cascade classifier(haar-cascade) for this >> implementation. With a sufficient number of samples for train using haar >> features would provide lesser rate of false positive results. AFAIK using >> of a background subtraction[1] method for pre processing can be used to >> reduce false positive results for the classification. >> >> [1] http://docs.opencv.org/3.1.0/db/d5c/tutorial_py_bg_subtraction.html >> >> Thanks, >> Sameera. >> >> On Tue, Sep 13, 2016 at 10:18 PM, Geesara Prathap <gees...@wso2.com> >> wrote: >> >>> Hi Srinath, >>> >>> OpenCV provides us set of interesting tools which can be used to train >>> classifiers based on our requirements. Some time ago I trained >>> a classifier[1] and controlled drone in real time. This article explains[1] >>> in a proper way how to train our own model using haar classifier based on >>> Adaboost which OpenCV provide. >>> >>> 1.https://github.com/GPrathap/opencv-haar-classifier-training >>> 2.http://coding-robin.de/2013/07/22/train-your-own-opencv-ha >>> ar-classifier.html >>> >>> Thanks, >>> Geesara >>> >>> On Tue, Sep 13, 2016 at 10:40 AM, Srinath Perera <srin...@wso2.com> >>> wrote: >>> >>>> Anusha, we should try Adaboost as Geesara mentioned ( when we done with >>>> what we are doing). >>>> >>>> --Srinath >>>> >>>> On Sun, Sep 11, 2016 at 10:52 AM, Anusha Jayasundara <anus...@wso2.com> >>>> wrote: >>>> >>>>> Hi Sumedha, >>>>> >>>>> I just detect the face. I went through few articles about face >>>>> recognition, and I have a sample code also, but it is not that much >>>>> accurate. >>>>> >>>>> Thanks, >>>>> >>>>> >>>>> On Fri, Sep 9, 2016 at 11:26 AM, Sumedha Rubasinghe <sume...@wso2.com> >>>>> wrote: >>>>> >>>>>> On Fri, Sep 9, 2016 at 11:24 AM, Anusha Jayasundara <anus...@wso2.com >>>>>> > wrote: >>>>>> >>>>>>> Hi Geesara, >>>>>>> >>>>>>> I used Haar full body cascade and HoG pedestrian detection cascade, >>>>>>> In Haar full body cascade they have mentioned that, upper body >>>>>>> detection, >>>>>>> lower body detection and full body detection is there in the cascade. >>>>>>> even >>>>>>> thought it is there, once I tried to use separate upper body detection >>>>>>> cascade with full body detection cascade. but when it is implemented >>>>>>> system >>>>>>> took long time to process even a simple video with two person. >>>>>>> I'll upload my code to Github repo. >>>>>>> I still didn't work with real-time CCTV videos ,but I was able to >>>>>>> build a real-time face detection system using the web cam of my laptop >>>>>>> and >>>>>>> it had issues on processing as the machine couldn't handle it. >>>>>>> >>>>>> >>>>>> Anusha, >>>>>> Did you just detect the face or associated that with a name as well? >>>>>> >>>>>> >>>>>> >>>>>>> We thought of doing video processing out side of the CEP and send >>>>>>> the process data in to the CEP.(i.e human count, time_stamp, frame rate >>>>>>> ,etc..). For now I send those data into CEP as a Json POST request. >>>>>>> >>>>>>> >>>>>>> Thank You, >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> On Wed, Sep 7, 2016 at 11:57 PM, Geesara Prathap <gees...@wso2.com> >>>>>>> wrote: >>>>>>> >>>>>>>> Hi Anusha, >>>>>>>> >>>>>>>> A few suggestions to improve your implementation. >>>>>>>> Haar and HoG are used to get visual descriptors which can be used >>>>>>>> to describe an image. Then both of them are using boosting >>>>>>>> classification >>>>>>>> like AdaBoost to tune up its performance. When you are using haar-like >>>>>>>> feature extraction method you need to use more that one model in order >>>>>>>> to >>>>>>>> make the final decision. Let's say you are using full body classifier >>>>>>>> for >>>>>>>> human detection. Along with this classifier, can’t detect upper body >>>>>>>> properly. When haar-like feature extraction is used you may have to use >>>>>>>> more that one classifier and the final decision will be taken >>>>>>>> aggregation >>>>>>>> or composition of those results. Next important thing is >>>>>>>> pre-processing. It >>>>>>>> may be composed of color balancing, gamma correction , changing color >>>>>>>> space >>>>>>>> and some of the factors which unique to the environment which you're >>>>>>>> trying out. Processing model is also more important since this is to be >>>>>>>> done in real time. If you can explain your algorithm we will able to >>>>>>>> provide some guidance in order to improve your algorithm to get a >>>>>>>> better >>>>>>>> result. >>>>>>>> >>>>>>>> Since the main intention of this project is to facilitate support >>>>>>>> for images process in the WSO2 Platform. I am just curious to know, >>>>>>>> how do >>>>>>>> you process the video stream in real-time with the help of CEP. Since >>>>>>>> you >>>>>>>> are using CCTV feeds which might be using RTSP or RTMP, where do you >>>>>>>> process the incoming video stream? Are you to develop RTSP or RTMP >>>>>>>> input >>>>>>>> adapters so as to get input stream into CEP? >>>>>>>> >>>>>>>> Thanks, >>>>>>>> Geesara >>>>>>>> >>>>>>>> On Wed, Aug 31, 2016 at 8:16 PM, Anusha Jayasundara < >>>>>>>> anus...@wso2.com> wrote: >>>>>>>> >>>>>>>>> Hi, >>>>>>>>> >>>>>>>>> The Progress of the video processing project is described in the >>>>>>>>> attached pdf. >>>>>>>>> >>>>>>>>> On Wed, Aug 31, 2016 at 11:39 AM, Srinath Perera <srin...@wso2.com >>>>>>>>> > wrote: >>>>>>>>> >>>>>>>>>> Anusha has the people counting from video working through CEP and >>>>>>>>>> have a dashboard. ( Anusha can u send an update with screen shots?). >>>>>>>>>> We >>>>>>>>>> will also setup a meeting. >>>>>>>>>> >>>>>>>>>> Also seems new Camaras automatically do human detection etc and >>>>>>>>>> add object codes to videos, and if we can extract them, we can do >>>>>>>>>> some >>>>>>>>>> analysis without heavy processing as well. Will explore this too. >>>>>>>>>> >>>>>>>>>> Also Facebook opensourced their object detection code called >>>>>>>>>> FaceMask https://code.facebook.com/posts/561187904071636. >>>>>>>>>> Another to look at. >>>>>>>>>> >>>>>>>>>> --Srinath >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> On Mon, Aug 15, 2016 at 4:14 PM, Sanjiva Weerawarana < >>>>>>>>>> sanj...@wso2.com> wrote: >>>>>>>>>> >>>>>>>>>>> Looks good! >>>>>>>>>>> >>>>>>>>>>> In terms of test data we can take the video cameras in the LK >>>>>>>>>>> Palm Grove lobby as an input source to play around with people >>>>>>>>>>> analysis. >>>>>>>>>>> For vehicles we can plop a camera pointing to Duplication Road and >>>>>>>>>>> get >>>>>>>>>>> plenty of data :-). >>>>>>>>>>> >>>>>>>>>>> I guess we should do some small experiments to see how things >>>>>>>>>>> work. >>>>>>>>>>> >>>>>>>>>>> Sanjiva. >>>>>>>>>>> >>>>>>>>>>> On Wed, Aug 10, 2016 at 3:02 PM, Srinath Perera < >>>>>>>>>>> srin...@wso2.com> wrote: >>>>>>>>>>> >>>>>>>>>>>> Attached document list some of the initial ideas about the >>>>>>>>>>>> topic. Anusha is exploring some of the ideas as an intern project. >>>>>>>>>>>> >>>>>>>>>>>> Please comment and help ( specially if you have worked on this >>>>>>>>>>>> area or has tried out things) >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> Thanks >>>>>>>>>>>> Srinath >>>>>>>>>>>> >>>>>>>>>>>> -- >>>>>>>>>>>> ============================ >>>>>>>>>>>> Srinath Perera, Ph.D. >>>>>>>>>>>> http://people.apache.org/~hemapani/ >>>>>>>>>>>> http://srinathsview.blogspot.com/ >>>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> -- >>>>>>>>>>> Sanjiva Weerawarana, Ph.D. >>>>>>>>>>> Founder, CEO & Chief Architect; WSO2, Inc.; http://wso2.com/ >>>>>>>>>>> email: sanj...@wso2.com; office: (+1 650 745 4499 | +94 11 214 >>>>>>>>>>> 5345) x5700; cell: +94 77 787 6880 | +1 408 466 5099; voip: +1 >>>>>>>>>>> 650 265 8311 >>>>>>>>>>> blog: http://sanjiva.weerawarana.org/; twitter: @sanjiva >>>>>>>>>>> Lean . Enterprise . Middleware >>>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> -- >>>>>>>>>> ============================ >>>>>>>>>> Srinath Perera, Ph.D. >>>>>>>>>> http://people.apache.org/~hemapani/ >>>>>>>>>> http://srinathsview.blogspot.com/ >>>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> -- >>>>>>>>> >>>>>>>>> Anusha Jayasundara >>>>>>>>> Intern Software Engineer >>>>>>>>> WSO2 >>>>>>>>> +94711920369 >>>>>>>>> >>>>>>>>> _______________________________________________ >>>>>>>>> Architecture mailing list >>>>>>>>> Architecture@wso2.org >>>>>>>>> https://mail.wso2.org/cgi-bin/mailman/listinfo/architecture >>>>>>>>> >>>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> -- >>>>>>>> Geesara Prathap Kulathunga >>>>>>>> Software Engineer >>>>>>>> WSO2 Inc; http://wso2.com >>>>>>>> Mobile : +940772684174 >>>>>>>> >>>>>>>> >>>>>>> >>>>>>> >>>>>>> -- >>>>>>> >>>>>>> Anusha Jayasundara >>>>>>> Intern Software Engineer >>>>>>> WSO2 >>>>>>> +94711920369 >>>>>>> >>>>>>> _______________________________________________ >>>>>>> Architecture mailing list >>>>>>> Architecture@wso2.org >>>>>>> https://mail.wso2.org/cgi-bin/mailman/listinfo/architecture >>>>>>> >>>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> /sumedha >>>>>> m: +94 773017743 >>>>>> b : bit.ly/sumedha >>>>>> >>>>>> _______________________________________________ >>>>>> Architecture mailing list >>>>>> Architecture@wso2.org >>>>>> https://mail.wso2.org/cgi-bin/mailman/listinfo/architecture >>>>>> >>>>>> >>>>> >>>>> >>>>> -- >>>>> >>>>> Anusha Jayasundara >>>>> Intern Software Engineer >>>>> WSO2 >>>>> +94711920369 >>>>> >>>>> _______________________________________________ >>>>> Architecture mailing list >>>>> Architecture@wso2.org >>>>> https://mail.wso2.org/cgi-bin/mailman/listinfo/architecture >>>>> >>>>> >>>> >>>> >>>> -- >>>> ============================ >>>> Srinath Perera, Ph.D. >>>> http://people.apache.org/~hemapani/ >>>> http://srinathsview.blogspot.com/ >>>> >>>> _______________________________________________ >>>> Architecture mailing list >>>> Architecture@wso2.org >>>> https://mail.wso2.org/cgi-bin/mailman/listinfo/architecture >>>> >>>> >>> >>> >>> -- >>> Geesara Prathap Kulathunga >>> Software Engineer >>> WSO2 Inc; http://wso2.com >>> Mobile : +940772684174 >>> >>> >>> _______________________________________________ >>> Architecture mailing list >>> Architecture@wso2.org >>> https://mail.wso2.org/cgi-bin/mailman/listinfo/architecture >>> >>> >> >> >> -- >> Sameera Gunarathne >> Software Engineer, WSO2 Inc. http://wso2.com >> <http://l.facebook.com/l.php?u=http%3A%2F%2Fwso2.com&h=gAQEswASa> >> Email: samee...@wso2.com >> Mobile: +94714155561 >> >> _______________________________________________ >> Architecture mailing list >> Architecture@wso2.org >> https://mail.wso2.org/cgi-bin/mailman/listinfo/architecture >> >> > > > -- > > Anusha Jayasundara > Intern Software Engineer > WSO2 > +94711920369 > -- Geesara Prathap Kulathunga Software Engineer WSO2 Inc; http://wso2.com Mobile : +940772684174
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