Författare:
Per Stenebo
Skapad:
2017-05-22 09:54:51
Ändrad:
2020-08-30 07:16:25
en

Vision

Image processing

| OpenCV | SimpleCV | pythonvision.org |

OpenCV

 OpenCV info: | main site | 4.4 docs | releases |

Check version:

python -c "import cv2; print cv2.__version__"

python3 -c "import cv2; print (cv2.__version__)"

 

Installation

Install OpenCV 4 on Raspberry Pi 3B/3B+/4 and Raspbian Buster

Ubuntu 18.04 + Python 3 + OpenCV 4 

Ubuntu 18.04: How to install OpenCV

 

Where did it go?

sudo find / -type f -not -path "$HOME/opencv*" \( -iname "opencv*" -or -iname "cv2*" \)
...
/usr/local/lib/python3.7/dist-packages/cv2/python-3.7/cv2.cpython-37m-arm-linux-gnueabihf.so

 

Användning

Table: Image processing (manipulation) functions inside OpenCV 

| Basic Operations on Images | OpenCV Blur functions |

How-To: Compare Two Images Using Python

pyimagesearch: | Raspberry Pi Face Recognition |

 OpenCV contour

| remove contour |

OpenCV Canny edge detection

| tutorial |

OpenCV shape detection: | pyimagesearch |

HoughCircles

| docs.opencv.org tutorial | pyimagesearch |

http://docs.opencv.org/2.4/modules/imgproc/doc/feature_detection.html?highlight=houghcircles

SimpleBlobDetector

| learnopencv.com | docs.opencv.org | Save and load keypoints | makehardware.com |

pyimagesearch -Histogram of Oriented Gradients and Object Detection

 

Övrigt

color range detector

 

 

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