Preprocessing of YOLOv5 classification model (2) ToTensor and Normalize

Preprocessing of YOLOv5 classification model (2) ToTensor and Normalize flyfish 1. The initial data is a floating point number import torch import numpy as np from torchvision import transforms mean = (0.485, 0.456, 0.406) std = (0.229, 0.224, 0.225) data0 = np.random.random((4, 5, 3)) # H x W x C data0 = np.round(data0,4) print(data0.shape) print(data0) […]

How does the front end prevent data from being abnormally tampered with and restore the data?

Every day, we deal with various documents, such as PRD, technical solutions, personal notes, etc. In fact, there is a lot of knowledge in document formatting. Just like me, I have obsessive-compulsive disorder about formatting, and I can’t bear to not add spaces between English and Chinese. Therefore, I have recently been working on a […]

Mysql shuts down abnormally and starts abnormally

2023-11-01T08:21:22.574390Z 0 [Note] InnoDB: Doing recovery: scanned up to log sequence number 13014483 2023-11-01T08:21:22.574401Z 0 [Note] InnoDB: Database was not shutdown normally! 2023-11-01T08:21:22.574470Z 0 [Note] InnoDB: Starting crash recovery. 2023-11-01 16:21:22 0x7f8f2d4ed700 InnoDB: Assertion failure in thread 140252917192448 in file os0file.cc line 3124 [root@sealos-k8s-node-08 ~]# docker logs dae5f49046b8 2023-11-01 16:21:21 + 08:00 [Note] [Entrypoint]: Entrypoint […]

The django-apschedule scheduled task stops abnormally

Background In the Django project, django-apschedule is used to implement scheduled tasks. The BackgroundScheduler scheduling class is used. The scheduling is implemented by executing scheduled tasks through background threads. The tasks are all persisted to the database. During the running of the project, due to an exception in the database, the scheduled task thread terminated […]

Solve the problem of cannot import name BatchNormalization from keras.layers.normalization

Table of Contents Solve the problem of cannot import name ‘BatchNormalization’ from ‘keras.layers.normalization’ Problem Description problem analysis solution in conclusion What is the BatchNormalization module? The principle of BatchNormalization Advantages and functions of BatchNormalization Use of BatchNormalization Solution to cannot import name ‘BatchNormalization’ from ‘keras.layers.normalization’ Recently, in the process of using Keras for deep learning […]

VMware opens centos black screen solution summary and solves the bugs (Centos7 system network abnormality, etc.)

A summary of solutions to black screen when VMware opens centos Foreword: 1. Summary of solutions to black screen when VMware opens centos 1. Situation Situation one: Situation 2 Situation three 2. Solution The simplest way: 1. Execute from the command line with administrator privileges 1. Run cmd as administrator 2. Enter “netsh winsock reset” […]

Some basic image preprocessing—normalize the scale of all pictures in a file, view the RGB value of each pixel, switch the specified color to white, and switch all pictures in the file from png to jpg

Table of Contents 1. Normalize the scale of all pictures in a file 2. View the RGB value of each pixel of an image 3. Switch the specified color to other colors (switch red to white in the code) 4. Switch all pictures in a file from png to jpg 5. Rename all images in […]

Removing abnormal data from Arduino – Wright and Grubbs criteria

Directory Wright criterion Introduction Grubbs criterion Introduction Arduino code implementation References Wright Criterion Introduction Wright’s criterion is a method for identifying outliers under normal distribution. The specific contents are as follows: Suppose that in a series of equal-precision measurement results, the i i i measured values x i x_i The residual corresponding to xi? v […]