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Questions tagged [shape-recognition]

34 questions
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detecting musical shapes with OpenCv on an android device

i have an assignment on one of my classes. i need to "make" a musical instrument with a phone. I was thinking of making something like this: there is a musical staff on a wall (or a board). then, the user can stick musical notes on that staff and…
angel208
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Window Phone augmented reality and shape recognition

I am a beginner in Windows Phone app development. My goal is to create a simple augmented reality application which will include shape recognition (ex. hand or face). Additionally I would like to draw 3D objects on screen and place them in reality.…
Sayid
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How to tune this ontology for simple geometric shape recognition?

I've the following ontology where red links are DatatypeProperties, blue ones are ObjectProperties and black ones 'is_a' relations. The ontology simply represent POINT, COORDONATES and SHAPES concepts. I'm interested in doing geometric shape…
Fopa Léon Constantin
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How to integrate MyScript into Electron for offline handwriting recognition?

I'm trying to integrate MyScript into my Electron application to enable offline handwriting recognition. I would like to know how to achieve this. If it's not possible to directly integrate MyScript into Electron, I would like to know if it's…
jiw jiang
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Simple shape recognition and classification by algorithm

I'd like to classify simple shapes (see the attached "sample resource of shapes") algorithmically (automatically). Does anyone know how to do that? The intended result would be a text such as "line", "circle", and "triangular" etc.
Yuta
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Shape Recognition CNN: Softmax Output is always 1

I am trying to classify geometric shapes with respect to certain properties (such as edgy forms vs. round forms). The output of my network is always either [1, 0] or [0, 1], even when the prediction is wrong. Is there a way to get useful softmax…
Valentin
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Hough transform to detect shape using equation of that shape

Is it possible to implement Hough Transform to detect shape (given in the form of equation). I know there is a generalized Hough transform to which we need to pass an image and a template but is there any way to pass equation of shape instead of…
hdc
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Differentiation between rectangle and square in image using opencv2 python

I'm learning how to recognize shapes that're within image provided. I'm able to recognize shape by number of edges present to the geometrical body. But now I'm wondering is there any way to differentiate between square and rectangle within…
Nuance
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Shape recognition Neural Network poor performance

I am trying to implement a Neural Network for shape recognition - actually those shapes are letters. I would like to implement this network to work on Fourier Descriptors retrieved from shapes. My problem is that, whatever I do, change number of…
Michal
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Opencv Python, shape recognition (bad quality picture)

I'm using the following code to detect certain shapes in an image: import cv2 import numpy as np img = cv2.imread("006.jpg") grey = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY) ret,thresh =…
Nicholas Haesen
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How to identify and crop a rectangle from a picture using java

I am bit new to image processing. What i'm doing is recognize rectangular shapes (not overlapped) of a given image and create separate images by crop them out. So the output images should be without a border. I tried some examples but none of it did…
javatar
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Bad result on shape recognition using invariant moments

My project is shape recognition of leaf. I use Invariant Moments to feature extraction and City Block Distance to compute the distance between test image and image in database. Bust the result i get is very bad. I can say the recognition is only get…
gussurya_w
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Image processing LABVIEW

How do I use feature detection to measure dimensions and locate a circle/line/rectangle in an image on LABVIEW. For example, lets say I inserted an image into labview I want labview to detect if it has any shape in it!
user3515628
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Check if there is line between two end points or not, opencv

I am using opencv to detect shapes, I have to detect a shape like this this will be a hand drawn picture, and i am using kinect to detect the picture by checking on frames. Now I get 6 points for these kind of pictures, by removing noise, edge…
Fahad Rauf
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Detect shapes using Open CV

I have been trying to detect shapes in an image and also arrive at a count as to how many such shapes are present in an image, for example a plus sign. Are there any built in functions to detect such shapes ? IF any please let me know. Thank you.
Sagar Sm
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