Re: [Architecture] RFC: Video and Image Processing Support in WSO2 Platform

Hi Sameera, We just detect the humans and get their count. I used hog pedestrian detection cascade for human detection. Now we are working on Aircraft detection system. I'm trying to train a cascade using opencv-traincascade. Thank You. On Mon, Sep 19, 2016 at 6:40 PM, Sameera Ramasinghe

Re: [Architecture] RFC: Video and Image Processing Support in WSO2 Platform

Hi Anusha, If you got good accuracies with HOG features, it's quite ok. But generally OpenCV implementation does not give good detection rates according to my experience. If you are not satisfied with the accuracies, I'd recommend using deep features for recognitions, as they have given me good

Re: [Architecture] RFC: Video and Image Processing Support in WSO2 Platform

Hi, I've been working on human activity recognition for some time now, and might be able to give some guide lines. I am not very clear on the goal though. Are you trying to classify actions, or to detect objects?. Action classification is a red hot research topic these days and quite complex due

Re: [Architecture] RFC: Video and Image Processing Support in WSO2 Platform

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

Re: [Architecture] RFC: Video and Image Processing Support in WSO2 Platform

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

Re: [Architecture] RFC: Video and Image Processing Support in WSO2 Platform

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

Re: [Architecture] RFC: Video and Image Processing Support in WSO2 Platform

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

Re: [Architecture] RFC: Video and Image Processing Support in WSO2 Platform

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 wrote: > Hi Sumedha, > > I just detect the face. I went through few articles about face > recognition, and I have a

Re: [Architecture] RFC: Video and Image Processing Support in WSO2 Platform

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 wrote: > On Fri, Sep 9, 2016 at 11:24 AM, Anusha Jayasundara

Re: [Architecture] RFC: Video and Image Processing Support in WSO2 Platform

*Human Action Recognition using Factorized Spatio-Temporal Convolutional Networks *http://arxiv.org/abs/1510.00562 On Fri, Sep 9, 2016 at 1:04 PM, Rajith Roshan wrote: > Hi Anusha, > > AFAIK Haar cascade is good to detect humans in still images. It does not > use the factors

Re: [Architecture] RFC: Video and Image Processing Support in WSO2 Platform

Hi Anusha, AFAIK Haar cascade is good to detect humans in still images. It does not use the factors like motion of humans which will be available in a real time video. Applying haar cascade for the video would process single frame at a time which will result in delay when processing real time

Re: [Architecture] RFC: Video and Image Processing Support in WSO2 Platform

On Fri, Sep 9, 2016 at 11:24 AM, Anusha Jayasundara 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

Re: [Architecture] RFC: Video and Image Processing Support in WSO2 Platform

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

Re: [Architecture] RFC: Video and Image Processing Support in WSO2 Platform

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

Re: [Architecture] RFC: Video and Image Processing Support in WSO2 Platform

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

Re: [Architecture] RFC: Video and Image Processing Support in WSO2 Platform

On Wed, Aug 10, 2016 at 5:01 AM, Pumudu Ruhunage wrote: > Hi, > > It's better to do image/video pre-processing before extracting any usable > information from images/videos. Reducing the amount of unnecessary > information in a given image/video is a vital part > There is

Re: [Architecture] RFC: Video and Image Processing Support in WSO2 Platform

Hi, It's better to do image/video pre-processing before extracting any usable information from images/videos. Reducing the amount of unnecessary information in a given image/video is a vital part when it comes to increasing final accuracy. (ex : grayscale transformation/ image restoration etc.)

Re: [Architecture] RFC: Video and Image Processing Support in WSO2 Platform

Anusha can you send notes about what we did so far to this thread. On Wed, Aug 10, 2016 at 3:02 PM, Srinath Perera 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