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Questions tagged [object-recognition]

The computer vision task of finding and identifying objects in an image or video sequence

The computer vision task of finding and identifying objects in an image or video sequence is often conducted consistent with one of two approaches:

  • Appearance-based methods

    • Use example images (called templates or exemplars) of the objects to perform recognition

    • Objects look different under varying conditions:

  • Feature-based method

    • a search is used to find feasible matches between object features and image features.

    • the primary constraint is that a single position of the object must account for all of the feasible matches.

http://en.wikipedia.org/wiki/Outline_of_object_recognition

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creating Haar cascade XML - different sizes

As I understood in order to generate XML, we gotta gather negative and positive images. In every tutorial I read/saw, all images; positive or negative, are resized to the same size, where the negative is usually double the size of the positive. My…
Potterhead
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Identifying circles besides using `imfindcircle` function

I have an image of particles of which I am trying to identify whether they have bonded in the image or not by whether or not they are touching. I have already used the imfindcircles function but have noticed it always comes up with some false…
Isaiahhack22
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How to use SVM in Object recognition

I am working in a project about recognizing the indoor environment objects (e.g. chair , table ). I am new to the machine leaning with opencv (using c++). My plan is to use SURF feature detection method and then categorize the objects using SVM…
Delani_92
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TypeError: 'module' object is not callable selectivesearch

File "", line 1, in img_lbl, regions= selectivesearch.selectivesearch(img, scale=500, sigma=0.9, min_size=10) TypeError: 'module' object is not callable Why am I getting this error? I'm confused. What do you…
Duha Hassan
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Vuforia for Hololens

I was wondering if someone else tried developing a hololens application using vuforia. Specifically, using vuforia's capacity to recognize and track objects. I tried and it seems like it's working. I was just not sure about the result I got from the…
Angelica cruz
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Can we change the green detector in vuforia object scanner ?And can two objects be recognized in vuforia?and without vuforia object scanner?

I am trying to do vuforia object recognition ?Need to make changes like if two objects it should identify it with some entity instead of shades.
nilesh surve
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Real Time Object detection using TensorFlow

I have just started experimenting with Deep Learning and Computer Vision technologies. I came across this awesome tutorial. I have setup the TensorFlow environment using docker and trained my own sets of objects and it provided greater accuracy when…
Sivaprasanna Sethuraman
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Alternative of the imageDatastore function

I have been going through a tutorial of deep learning in MATLAB. I tried to execute the following code rootFolder = 'E:/Data Science and Machine Learning Stuff/DataSets/scene_categories'; categories = {'bedroom' , 'CALsuburb' , 'industrial' ,…
Muhammad Hashim Shafiq
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Is there a way to limit a trained Caffe model to just a set of classes?

I'm using the default 'bvlc_reference_caffenet' model. I'm trying to detect a spatula. Now the results I'm getting are pretty satisfactory. The spatula class is always among the top 5 predicted classes but the rest are useless random things that I'm…
legolasshegolas
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Kudan 3D Object Recognition

I am trying to get into the Kudan AR framework (in Unity) and I have seen this video of 3D Object Recognition. Now I am wondering how this is possible with that framework. I have also seen another example where it is explicitly about to regocnize…
Christoph
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How can I get the position of an identified object in Scikit-Learn?

I can use Scikit-Learn to train a model and recognize objects but I also need to be able to tell where in my test data images the object is residing. Is there someway I could maybe get the coordinates of the part of the test image which has the…
legolasshegolas
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Vuforia Object Recognition Unity Sample

I am trying to implement the Vuforia Object Recognition Unity Sample. Vuforia Unity Sample I am using unity 5.3.5f1 and the provided Vuforia extensions. I try to implement the application on a Nexus 7 (Android Version 4.4.3). Building process went…
Eric
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Object recognition of a set of objects

In a computer vision project, the image I want to process can be partitioned in "zones" containining multiple products of the same kind. Provided that I can retrieve image information of all the possible kinds of product, I need to detect which kind…
aretor
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3d object recognition for AR android app

I'm trying to develop an AR android application. it should detect and recognize the object captured by the camera, I'm using OpenCV for this purpose, but I'm not very familiar with object recognition for mobile devices in the AR field. I have two…
Lisa.s
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How to Detect plants and get the shape of them using OpenCV

Now, I'm trying to detect the growth of plants by comparing pictures of plants. The camera on a flower pot will take the picture of the plant every hour. I want to my device get heights of each picture and compare them relatively using openCV. But I…
user3867261
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