Image banded noise removal
Restoration and enhancement of specified images
Original image 1-1 The experimental process is as follows: According to the observation, it is not difficult to find that there is impulse noise in the image, so the median filter is used to filter and remove impulse noise. The filtering of impulse noise is not limited to the filtering method. T ...
Added by jpmm76 on Wed, 02 Feb 2022 06:41:55 +0200
opencv c + + Learning III (fuzzy edge detection, expansion and corrosion)
catalogue
1. Ambiguity
1.1 fuzzy mean
1.2 Gaussian filtering
2.canny edge detection
3. Expansion and erosion
1. Ambiguity
Smooth/Blur is one of the most common and simplest operations in image processing
The main reason for using this operation is to reduce noise during image preprocessing
Simple principle:
1.1 fuzzy mean
...
Added by nickcwj on Mon, 31 Jan 2022 03:59:25 +0200
MATLAB image processing -- Otsu threshold segmentation (with code)
catalogue
Otsu threshold
Algorithm flow
Flow chart representation
result
code
Otsu threshold
Otsu threshold, also known as the maximum variance threshold, was proposed by Otsu zhanzhi of Japan in 1979. It is derived based on the principle of discrimination and least square method. Its basic idea is to maximize the variance between cla ...
Added by dysonline on Sat, 29 Jan 2022 22:22:56 +0200
NLM_ P-parameter-free fast pixelwise non local means denoising sharing
Paper name: parameter free fast pixelwise non local means denoising
Paper Download: IPOL Journal · Parameter-Free Fast Pixelwise Non-Local Means Denoisinghttps://www.ipol.im/pub/art/2014/120/
Previously, I shared an article on NLM denoising (NLM_B) at the block level. This article is based on NLM denoising(NLM_P) at the pixel level. There are ...
Added by bogdan on Sat, 29 Jan 2022 20:11:10 +0200
Basic image processing use of ImageDraw module
✨✨✨
Thank you for opening Xiaobai's article
"I hope you have made a little progress today and come closer to a better life!" 🌈
catalogue
🚀 Previous review
🍉 preface
🍉 Basic function application
🍉 Application example I
🍉 Application example II
🚀 Previous review
Basic image processing (I)(1 message) basic ima ...
Added by wilded1 on Wed, 26 Jan 2022 23:56:06 +0200
Gesture tracking based on Opencv+Mediapipe
Relevant introduction
OpenCV is based on Apache 2 Cross platform for 0 licensed (open source) distribution computer vision and machine learning Software library, which can run in Linux,Windows,Android and Mac OS On the operating system. It is lightweight and efficient - it is composed of a series of C functions and a small number of C + + cla ...
Added by FraXTC on Tue, 25 Jan 2022 11:23:25 +0200
CT image acquisition human body part MASK (removal machine)
CT image acquisition human body part MASK (removal machine)
When making statistics on the mean standard deviation of CT images, we hope to make statistics only for the human body part, so we need to obtain the MASK mask of the human body part from the CT image, and the human body is often connected with the machine tool part, so we also nee ...
Added by Drakla on Tue, 25 Jan 2022 04:22:56 +0200
Introduction to image processing - morphological operation
Morphological operation
1. Connectivity
In the image, the smallest unit is the pixel. There are 8 adjacent pixels around each pixel. There are three common adjacent relationships: 4 adjacent, 8 adjacent and D adjacent. As shown in the figure below: 4 adjacency: the 4 neighborhood of pixel p(x,y) is: (x+1,y); (x-1,y); (x,y+1); (x,y-1)
D ad ...
Added by Ward on Mon, 24 Jan 2022 21:41:51 +0200
Draw a white rectangle using the region growth method
Firstly, the region growth method in digital image processing is briefly introduced
Three problems need to be considered in the application of region growth method
1. What are the seed pixels or which one
The general principles for selecting and determining a set of seed pixels are: (1) Pixels close to the cluster center can be used as seed ...
Added by paul.mac on Mon, 24 Jan 2022 16:18:09 +0200
GB28181 protocol -- real time video and audio on demand (Preview)
1. Basic requirements
According to the description of real-time video and audio on demand in Chapter 9 of GB/T 28181-2016, its contents are as follows:
SIP messages of real-time video and audio on demand shall be routed and forwarded through SIP servers in this domain or other domains, and the real-time video and audio stream of the target de ...
Added by perfume on Mon, 24 Jan 2022 02:17:19 +0200