Programmer Think

1, Introduction Digital signals are generated by sampling, quantizing and encoding continuously changing analog signals, which is called PCM (Pulse Code Modulation), that is, Pulse Code Modulation. Pulse code modulation is to transform a time continuous analog signal into a time discrete digital signal, which is transmitted in the channel. P ...

1, Introduction to particle swarm optimization 1 concept of particle swarm optimization Particle swarm optimization (PSO) is an evolutionary computing technology, which originates from the research on the predation behavior of birds. The basic idea of particle swarm optimization algorithm is to find the optimal solution through the cooperation ...

1. Introduction Principle of Wavelet Transform Wavelet transform is a time-scale (time-frequency) analysis method for signals. It is a time-frequency localization analysis method where the window size is fixed and the shape can be changed, and the time window and frequency window can be changed. It is characterized by multi-resolution analysis ...

1, Introduction to particle swarm optimization 1 Introduction The group behavior of birds and fish in nature has always been the research interest of scientists. Biologist Craig Reynolds proposed a very influential bird swarm aggregation model in 1987. In his simulation, each individual follows: avoid collision with neighboring individuals: ma ...

Definition of fresh agricultural products Fresh agricultural products refer to primary products such as fresh fruits that can be sold directly on the shelf without further production. At present, fresh agricultural products mainly include fresh vegetables, fruits, flowers, eggs, milk, raw poultry, aquatic products and fresh meat products. Thes ...

1, Introduction 1 threshold The simplest way to block an image is to set a threshold to binarize the image. How should we choose this threshold For the image with obvious boundary in the histogram of the image, we can easily find this threshold, but if the boundary of the histogram of the image is not obvious, it will become very difficult to ...

The most important task this week is to write the CIR estimation of multipath effect, so the idea process is collected in a blog for future reference 1 topic interpretation First of all, I can't understand the task topic. What is CIR estimation? When I asked my sister about the channel impulse response, I suddenly thought of the channel e ...

Introduction of template matching algorithm 1 Overview Pattern recognition is to study the automatic processing and interpretation of patterns by solving mathematical models through computers. Among the various methods of pattern recognition, template matching is the easiest one, and its mathematical model is easy to establish. Digital image p ...

1, Introduction The detection of pavement cracks is an important part of expressway pavement disease maintenance and management. In recent years, pavement crack automatic detection technology has been widely used. Due to the complexity of pavement crack image, the detection algorithm directly affects the accuracy of detection results. Therefor ...

1, Introduction Mean filtering refers to the pixel value of any point, which is the surroundingThe average of the pixel values. For example, in the following figure, the pixel value of a red dot is the sum of the pixel values of the surrounding blue background area divided by 25, 25 = 55 is the size of the blue area. The detailed calcul ...