Questions tagged [computer-vision]
Use this tag for questions related to Computer Vision -- any aspect of software that enables computers to perceive, understand and react to their environment using cameras. For questions related to image filtering and quantification, use the tag [image-processing] instead.
computer-vision
15,792
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"Assertion failed" error while detecting Aruco markers with OpenCV in JAVA
I am using OpenCV to detect Aruco markers in a frame captured by a webcam. The problem arose from the following piece of code:
public class Detector {
private final ArucoDetector detector;
...
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17
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single class object detection using cnn getting false positive
Here, i trying to build a Manhole object detection using cnn , In this model i got 95% accuracy and after training. im getting false positive like , if i test image with manhole(trained object) for ...
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Error "For non-planar calibration rigs the initial intrinsic matrix must be specified in function 'cvCalibrateCamera2Internal'"
The full trace of the error I'm encountering:
in stereo_calibrate
ret, cameraMatrix1, distCoeffs1, cameraMatrix2, distCoeffs2, R, T, E, F, perViewErrors, _, _= cv2.stereoCalibrateExtended(
cv2.error: ...
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How do I track a contour from my previous image?
So I have a video of bacterial cells moving around which I converted to frames. Now I want to find the instantaneous velocity of each bacterial cells. For this I am interested in finding by how much a ...
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How to measure the width and angle of two intersecting ropes using OpenCV? [closed]
The first picture below is the original image, showing a net. The ropes in the net are of two types: thick and thin. It is necessary to distinguish which are thick ropes and which are thin ropes ...
- 27
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17
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How to detecting and measuring edges of real world objects in AR using WebXR?
I am trying to build an AR measure App. The user will be able to measure distances using AR ( WebXR ). I have figured out the distance measure part and it is working fine. Currently I am using hit ...
- 535
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35
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How to prevent the ai model from detecting a specific object
I am in the middle of an AI project. And there is a specific object that I want to make it not to detect, so seeking a solution about this.
Have done two of objects' labeling and trained the model ...
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28
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Variable size input for CNN [closed]
I would like to create an AI that could guess the next image in a sequence of images and I have the idea to feed a CNN with 1,2,3,...,n-1 images as input running it through an LSTM and the output is ...
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27
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Improvement of CV2 shape detection for spot detection on TLC
In my work, I use TLC which give me object like the one on this picture. It is a piece of paper with spot on it at a precise height.
I need to detect the plate itself and it measurments.
Then I need ...
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Trying to implement the MiDas model for Monocular Depth estimation in tensorflow and values for distance are off the charts [closed]
Downloaded Tflite MiDas model from Kaggle.
Looked at a few articles for MiDas and Monocular Depth Estimation(Basically finding the distance of an object from the camera using pixels)
This is for ...
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23
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Error with OpenCV cv2.minEnclosingTriangle [closed]
my program generates 2D contours using scipy.spatial ConvexHull. I get the same error for any hull
Example
ph=array([[0.16416803, 0.20534728],
[0.54442649, 0.18041865],
[0.94021202, ...
-1
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0
answers
24
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How to train Yolo 3D for NYU dataset
I have had trained my Yolo 3D model in KITTI dataset and now I would like to train it on NYU dataset. What changes must I do in the NYU dataset in order to train it in YOLO 3D model?
I would like to ...
- 47
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What is causing these cubemap projection distortions? [closed]
https://github.com/jaxry/panorama-to-cubemap
https://jaxry.github.io/panorama-to-cubemap/
To convert an equirectangular panorama image into a cubemap I start by loading the full 360x180 ...
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1
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30
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Which are the most efficient models for shape detection in an image? [closed]
I want to create a Python algorithm that detects objects appearing and disappearing between 2 photos. Thos photos are not taken exactly from the same spot. My idea is to use a pretrained model that ...
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How can I find the corners of a cube with known dimensions in an RGB image?
How can I find the corners of a cube with known dimensions (30cm each side) in an RGB image real time? The cube will be monochrome (one color) but the color information is not known.
I searched 2d ...
