slowfast trains its own dataset
Little mood: today, I just finished the new crown vaccine in school, and I wrote this blog after I came back. I hope that I can help my colleagues and quickly reproduce this model, which can help you save learning time and avoid stepping on the pit. Then, for the outbreak in Hefei, I hope everyUTF-8...
Posted by Ravenous on Sun, 16 May 2021 07:00:41 +0930
computer vision
The principle of camera calibration Camera calibration is simply a process from the world coordinate system to the camera coordinate system, and then from the camera coordinate system to the image coordinate system, that is, the process of finding the final projection matrix P. World coordinatUTF-8...
Posted by allistera on Mon, 24 May 2021 03:59:51 +0930
Principle, steps and implementation of python camera calibration
1, The principle of camera calibration 1.1 how the camera image: In the camera imaging system, there are four coordinate systems: world coordinate system, camera coordinate system, image coordinate system and pixel coordinate system. Principle of camera imaging: 1.1.1 world coordinate system: TUTF-8...
Posted by phpbeginner0120 on Mon, 24 May 2021 06:10:42 +0930
Z-axis tilt correction
Image skew Generally, there are two cases of image skew Plane tilt: the camera is parallel to the object, and the image can be corrected by rotation. Z-axis tilt: the camera is not parallel to the object, and the image must be perspective transformed first, and then rotated to complete the corrUTF-8...
Posted by judgenules on Fri, 04 Jun 2021 08:35:31 +0930
Handwritten Number Recognition Digit Recognizer
Handwritten Number Recognition Digit Recognizer In this Machine Learning project, I do a more classical handwritten number recognition project to consolidate my knowledge and lead you into the era of neural networks, which can expand on this classification task and convolute everything. If youUTF-8...
Posted by phatpappy on Sat, 05 Jun 2021 02:29:40 +0930
BOF image retrieval
Origin of algorithm Origin 1: texture recognition Texture is composed of several repeated texture units, as shown in the figure below If we want to recognize textures, we should pay attention to the types of texture units, not the spatial distribution. A texture image contains many kinds of teUTF-8...
Posted by adamhhh1 on Mon, 07 Jun 2021 03:15:47 +0930
Pointnet + + Code: square_distance function & query_ball_point function
Square_distance function square_ The distance function is mainly used to determine the distance between each point and the sampling point in the process of ball query. The input of the function is two groups of points, N is the number of the first group of points, M is the number of the secondUTF-8...
Posted by Cesar on Thu, 10 Jun 2021 02:54:34 +0930
Explain in detail the structure of Deeplab series: SPP, atrous revolution, ASPP, encoder decoder with atrous revolution
catalogue 1.SPP 2.Atrous Convolution 3.ASPP 4.Encoder-Decoder with Atrous Convolution 1.SPP Spatial Pyramid Pooling: Spatial Pyramid Pooling, arbitrary size input + fixed proportion pooling = > Fixed len gt h output. Such as the variant ROI pooling in fastrcnn. It takes different sizes of the sUTF-8...
Posted by pedroz on Mon, 21 Jun 2021 03:35:44 +0930
How to build your own face recognition system quickly
preface How to use artificial "mental retardation" to recognize face quickly? First of all, when we get an image, we need to see whether there is a face in the image. If there is a face, we need to intercept the face, put it into the feature extraction network to extract features, and then claUTF-8...
Posted by TexasOutdoors on Sun, 27 Jun 2021 02:59:45 +0930
Learn opencv Python together -- image thresholding and filtering in image processing
Contents of series articles preface This tutorial will learn simple threshold, adaptive threshold and Otsu threshold: cv.threshold and cv.adaptiveThreshold And using low-pass filter to blur image, 2D convolution and so on 1, Image threshold function cv.threshold and cv.adaptiveThreshold 1. SimpUTF-8...
Posted by jamkelvl on Sat, 03 Jul 2021 02:59:57 +0930