Methods to acquire, analyze and understand images using mathematical approaches.
Questions tagged [vision]
664 questions
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2 answers
Computer Vision: How to obtain what percentage of image contains a specific texture?
I am building a app to see the progress of deforestation. Over time i would like to take a satellite image from a location and see what percentage of that image contains forest.
I have attempted google's vision API, it does not have this…
Nicky Feller
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2 answers
Google vision api text detection
I am using google vision api to recognise text from image. The image in Japanese language.
But response is not in Japanese language it is in English. Can any body tell me how to change english to Japanese.
Manzoor
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- 3
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votes
1 answer
Image processing LabVIEW and myrio
i want a good tutorial or courses to start learning image processing in LabVIEW using myrio and Vision Assistant
To detect a object and send the end effector of the delta robot to it
عمار حيان
- 11
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votes
1 answer
OpenCV: How to find projection matrix from calibrateCamera() output?
I'm able to calculate the camera calibration using OpenCV in Python. However, what I really need is the projection matrix. Looking at the equations from the docs, it looks like this is P = K[R|T] where K is the intrinsic matrix, R is the rotation…
Booley
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Fourier Angle Transformation of Picture, C++
I need get angle of object on picture, using Fourier transformation.
I have a picture object, that I rotated. There are no problems with the Fourier realization. It shows me good gradient lines that confirm the correct object angle.
Q. How do I get…
WorkStudio
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1 answer
error: (-215:Assertion failed) !empty() in function CV2 Error
I am making a program in python that just draws a rectangle around a car. I am currently stuck on getting the coordinates of the car, here is the code:
#################################################
import…
EMEMEM123
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1 answer
C# Cognex ,why he say null reference exception
enter image description here
code:
CogFindCircleLastRunRecordConstants.BestFitCircle;
CogFindCircleTool_.Run();
if ((CogFindCircleTool_.Results.GetCircle() != null) && (CogFindCircleTool_.Results.GetCircle().Visible == true))
…
KAI PAN
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votes
1 answer
Is it possible to convert m2ts with Dolby Vision into mp4?
Is it possible to convert a m2ts with dual layer Dolby Vision information into an MP4 without any loss of the information?
Godmax
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votes
2 answers
are there any solutions or algorithms for detecting liquid in computer vision?
This question just came up in my mind with curiosity.
So my question is that are there any solutions or algorithms detecting liquid such as water, coffee or something like this.
What I would like to do with this is just define whether it is liquid…
sangjun lee
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votes
1 answer
Create dataset for LeNet?
I'm working on a project for which I'd like to create a dataset of drawn faces (similar in concept to the CUFS dataset). Hand-drawing the faces aside, how would I go from "I have uploaded these image files to my computer and have ensured that they…
29374819
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Extract data from txt with regex
I just used Google Vision API to convert a pdf receipt to a txt file. Now I would like to extract 4 specific fields and save those in a new txt file.
I highlighted 2 examples of the items I woul like to extract
yellow: product ID
;green:…
ricardocalleja
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votes
1 answer
Face detection using Android camera.?
Is it possible to scan a passport image using mobile camera and save his details and later detect that person using an Android mobile camera and fetch his details ?(Face detection)
Ajith Kalyan
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3 answers
Depth or 3D camera for machine vision or robotic application in the range 0.2 meter to 5 meter?
I have found two depth/3d camera.
Intel SR300
Zed camera
Zed camera gives a map at a range 0.7 meter to 20 meter. But my application needs minimum range for depth approx 0.2 meter.
Intel SR300 works for range 0.2 meter to 1.5 meter. 1.5 meter is…
Javed
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2 answers
How can i show an image from its pixels which are already saved in a file ?
I m using opencv and c++ to save an image's pixels in a file, now i want to restore the image in order to show it again. could you give some suggestions?
[update: included code from OP's comments]
I'm using these loops to save my image's pixels in a…
