## Basic image operation and processing [Chapter 1 of computer vision]

I PIL:Python image processing library
PIL(Python Imaging Library), which provides general image processing functions, has a large number of useful basic image operations, such as image scaling, clipping, rotation, color conversion and so on. The following will give specific examples of some PIL basic image operations.
1. Read an image and dis ...

Posted by **TNIDBMNG** on *Thu, 10 Mar 2022 15:14:50 +0100*

## Android talk about Bitmap

preface
After a year, I found myself slack and didn't blog much. I also wanted to write the problems encountered in the project, but I didn't put them into action. Recently, I reconstructed some bad code of the project. When I'm free, it's also time to share the problems encountered in the project with you.Well, after nagging, today we wi ...

Posted by **jack_wetson** on *Wed, 09 Mar 2022 15:48:04 +0100*

## Tiff image processing 2_Python

Image data type conversion, image stretching and band judgment
Through the pit... I won't mention it. Before the training of in-depth learning, when the data sets are almost completed, that is, downloading, labeling, cutting and screening are all finished. Sent to the network for training. Due to the inconsistency of data types, the prediction ...

Posted by **f8ball** on *Wed, 09 Mar 2022 14:35:12 +0100*

## [image retrieval] matlab source code of image retrieval based on Hu moment invariants

1, Introduction
Geometric moment was proposed by Hu(Visual pattern recognition by moment invariants) in 1962. It has translation, rotation and scale invariance. These seven invariant moments form a set of characteristic quantities, Hu M. K proved that they are invariant to rotation, scaling and translation in 1962. In fact, in the process of o ...

Posted by **pablogosse** on *Tue, 08 Mar 2022 20:35:23 +0100*

## resample method and code notes of Python SimpleItk Library

Note: some pits explored on resample and the simple method of final discovery Requirements: there are already registered CT and PET images, and the gold standard label is drawn on CT, so there are some simple requirements. One is to resample the PET image to the same size as the CT image (for example, from 192) × one hundred and ninety-tw ...

Posted by **rubing** on *Fri, 04 Mar 2022 11:59:14 +0100*

## Design of real-time image edge detection system based on FPGA

Today, we bring you the design of real-time image edge detection system based on FPGA. Due to the long length, it is divided into three parts. Today, I'll bring the third and second articles. I don't talk much and deliver the goods.
Reading guide
With the rapid development of science and technology, FPGA brings new opportunities for digi ...

Posted by **Huijari** on *Fri, 04 Mar 2022 02:01:04 +0100*

## [learning notes] fundamentals of OpenCv image processing

1 basic knowledge of image
1.1 digital image
A two-dimensional image can be represented by a matrix or array. We can understand it as a binary function
f
(
x
,
y
)
...

Posted by **ArcAiN6** on *Tue, 01 Mar 2022 05:56:51 +0100*

## [face recognition] face recognition based on GUI PCA+SVM (accuracy) [Matlab 761]

1, Introduction
1 PCA PCA (Principal Component Analysis) is a commonly used data analysis method. PCA is a method that transforms the original data into a group of data representation with linear independence of each dimension through linear transformation. It can be used to extract the main feature components of data and is often used for dim ...

Posted by **Jen_u41** on *Sun, 20 Feb 2022 09:27:41 +0100*

## [personal notes] OpenCV4 C + + image processing and video analysis 13 lessons

Personal data, for learning purposes only Modification time - 21:11:31, February 19, 2022 Course of study: OpenCV4 image processing and video analysis practical tutorial Lecturer: Jia Zhigang
13 custom filtering
opencv knowledge points:
Convolute image with kernel - filter2DScaling takes absolute value and converts it to 8 bits - convertSc ...

Posted by **johnnyblaze1980** on *Sun, 20 Feb 2022 00:38:21 +0100*

## [leaf recognition] HU moment invariant leaf recognition [Matlab 740]

1, Introduction
This topic is a leaf recognition system based on MATLAB HU moment invariants. By calculating the geometric characteristics of various leaves, we can judge what type of leaves they belong to. Geometric moment was proposed by Hu(Visual pattern recognition by moment invariants) in 1962. It has translation, rotation and scale invar ...

Posted by **shamly** on *Sat, 19 Feb 2022 21:04:07 +0100*