72,818 questions
- Bountied 0
- Unanswered
- Frequent
- Score
- Trending
- Week
- Month
- Unanswered (my tags)
Score of -8
0 answers
100 views
Is this fine enough for Computer Vision? [closed]
I've been working on a small collection of computer vision scripts and I wanted to check whether the overall scope and depth are appropriate for the task I've been given, or whether I should be adding,...
- reputation score 1
Score of 2
1 answer
98 views
I'm trying to detect an ArUco marker in a picture. However, the detection does not work and gives 'None' even if the pic only contains the marker? [duplicate]
import cv2
import numpy as np
import matplotlib.pyplot as plt
width = 1080
height = 1920
# create the dictionary for markers type
dictionary = cv2.aruco.getPredefinedDictionary(cv2.aruco.DICT_4X4_50)
...
- reputation score 23
Score of 3
0 answers
92 views
Why face_recognition.face_encodings() cause request timeout in concurrent django requests?
I am integrating a real-time computer vision pipeline into a Django view backend to process webcam frames. The frame analysis logic runs when a request hits the endpoint. My code is within a view like ...
- reputation score 103
Score of 0
0 answers
97 views
Where should liveness check be performed in a face_recognition pipeline? [closed]
I have a Django attendance application that uses OpenCV and the Python face_recognition library.
My current recognition pipeline is:
camera
↓
face_locations()
↓
face_encodings()
↓
...
- reputation score 103
Score of 0
0 answers
64 views
Optimize SGD weights convergence for frame differencing features [closed]
I am developing a real-time sports analytics system in Python 3.12. The pipeline decodes a video stream frame-by-frame to classify whether a ball is "IN" or "OUT" relative to a ...
- reputation score 1
Score of -3
1 answer
114 views
How to register a blurry IR image to a sharp RGB image when the scene has a repetitive grid structure? [closed]
I am a student working on a plant phenotyping project. I am trying to align RGB and infrared (IR) images of plant trays.
The setup:
RGB camera: sharp, ×ばつ3006
IR camera: blurry, ×ばつ768 (upscaled ...
- reputation score 9
Score of -1
0 answers
123 views
MATLAB imwarp() & Python cv2.warpAffine(). Matching Images but not equal grayscale values [closed]
I am currently trying to replicate the process of warping an image in Python in MATLAB. I am currently able to use MATLAB's imwarp() to match my warp image in Python that used cv2.warpAffine(). When I ...
- reputation score 5
Tooling
0
votes
0
replies
48
views
How should I process frames from an LWIR camera such that an image stitching algorithm can reliably identify matching features?
Before I get into the issue I'm having, I'd like to preface this by saying I'm largely clueless when it comes to computer vision and optics in general, so much so that the most reliable source I've ...
- reputation score 29
Best practices
0
votes
2
replies
79
views
NVcompositor in Gstreamer Pipeline Reusability
Does NVcompositor in Gstreamer Pipeline is reusable ?
In my pipeline , I can't able to reuse the pipeline after 1st iteration , the pipeline receives SIGSEG.
How to solve this issue
Is there any ...
- reputation score 1
Score of 1
1 answer
348 views
How to fix this python code to count different sized (length) samples in an image?
I am trying to answer this question:
How to fix this python code to count duplicate sample in the images?
using 'rods_input.png' as input:
where OP was asking for:
I want to count samples in the ...
- reputation score 3397
Score of 3
1 answer
117 views
Linker can't find cv::VideoCapture::VideoCapture() under Cygwin? [closed]
i'm running into a link-time error when i try to write a very simple program to open a video file using the opencv library under cygwin. the linker isn't able to find the VideoCapture constructor ...
- reputation score 379
Tooling
1
vote
2
replies
95
views
Pixel-based Pathfinding for a Bot in a 2.5D Isometric Game
I am building a game automation bot for Royal Revolt 2 using Python (running on an Android emulator and controlled via ADB inputs). I am currently stuck on designing a robust, vision-based pathfinding ...
- reputation score 1
Score of 2
1 answer
105 views
context is already initialized error when using ros2 gstreamer and opencv
I am trying to create a node that read a gstreamer pipeline and process it using opencv
Somehow those three are not playing nice. The strange thing is that this same code works well outside of ROS2. I ...
Advice
1
vote
1
replies
67
views
How can I detect Linux GUI elements such as close/minimize/maximize buttons for cursor snapping in Python?
I am developing a Python application that lets me control the desktop cursor using hand gestures. I am using MediaPipe to track the hand position and map it to screen coordinates.
The basic cursor ...
Best practices
1
vote
6
replies
180
views
How do i filter similar images with a common element
Im following this ARG i found recently called neiz or whatever, their most recent video features a grid of pixels that a friend helped me sorta isolate in video editing software. It changes twice ...