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1, Introduction to image denoising and filtering 1 image denoising 1.1 definition of image noise Noise is an important factor that interferes with the visual effect of image. Image denoising refers to the process of reducing noise in image. There are three kinds of noise classification: additive noise, multiplicative noise and quantization noi ...

Python Xiaobai's topic report - actual combat of OpenCV matting project (5) This series is Python Xiaobai's task "image segmentation and matting based on OpenCV". It should be noted that this series is not a matting project tutorial of OpenCV, but a topic report on this topic. It includes a relatively complete PyQt project. From t ...

1, Install opencv For the installation of OpenCV, if you use pycharm under windows system, you can directly use the pip command on the terminal or click the setup Python interpreter to enter opencv python If you are using conda, you can also use the pip command or conda install to install It's easier under linux. It will also reduce many unexp ...

1, Introduction Histogram of oriented gradient (HOG) is a feature descriptor for target detection in the field of computer vision and image processing. This technique is used to count the number of directional gradients or information in the local image. This method is similar to edge direction histogram, scale invariant feature transformation ...

Original link: http://www.juzicode.com/image-ocr-python-easyocr Orange fungus before Pytes seract extracts and recognizes the text in the picture How to use tesseract to extract and recognize text in pictures in Python is described in. Today, let's talk about EasyOcr. It is also a very excellent OCR package, which is quite easy to use. 1. Ins ...

Swing transformer: Interpretation of the paper on hierarchical vision transformer using shifted windows Reference link: https://blog.csdn.net/qq_37541097/article/details/121119988?spm=1001.2014.3001.5501 Code link: https://github.com/microsoft/Swin-Transformer Paper link: https://arxiv.org/pdf/2103.14030.pdf Summary: This paper presents a ne ...

Introduction: ※ apriltag detection is a relatively simple method based on visual positioning. This paper discusses the effect of homography matrix in apriltag detection results, which is inconsistent with the application that can be directly used to draw apriltag normal vector. The ability of apriltag algorithm pasted on non plane is tested. If ...

I. Introduction 1. Overview of basic principle of template matching When comparing two images, the first basic problem we face is: when are the two images the same or similar, and how to measure the similarity of the two images? Of course, the general method is that when the gray values of all pixels of the two images are the same, we think ...

catalogue 1, Structural element 2, Swell 1. Principle 2. Dilation function 3. Code 4. Effect 3, Corrode 1. Principle 2. Corrosion function (erode) 3. Code 4. Effect 4, Simple operation - callback function and slider 1. Callback function 2. Slider creation 3. Code 4. Effect reference material 1, Structural element The ge ...

1, Digital image processing 1.1 converting color image files to grayscale files gray image Gray image is an image with only one sampling color per pixel. This kind of image is usually displayed as a gray scale from the darkest black to the brightest white. In theory, this sampling can be different in the depth of any color, or even differ ...