C++ & Other

Conversion between QByteArray and Signed Integer (int)

About the decimal to hexadecimal signed conversion method:

hexadecimal Converts to a signed decimal number (-128–127)
The first bit is used as the sign, 0 is a positive number and 1 is a negative number.
For…

C/C++ does not call third-party libraries to generate BMP images

Opencv reads NV12 format (.yuv) files and converts them to RGB format and saves them as JPG

The actual test code is as follows:

get ready with this:

#include <iostream>
#include <stdio.h>
#include <string.h>…

C++ code NV12 format to BGR

This function processes each pixel in the input NV12 image, converts the YUV values to RGB, and stores the result in the output BGR image. It handles the subsampling of the U and V components by calculating the correct index for them and ensures that the RGB values are within the…

OpenCV implementation converts raw images to bmp images(C++ code)

If you have any questions or customized development requirements, you can contact me Email : lonlonago@foxmail.com or WhatsApp …

JPG image convert to NV12 format (C++ code)

Using the opencv function, transferring a JPG image to NV12 format is divided into two steps:

Convert the BGR format to I420.
Convert the I420 format to NV12 or NV21.

Tree Volume Calculation Method Based on 3D Laser Scanning Point Cloud use Matlab code

Aiming at the problem that the shape of the canopy is irregular and the volume of the canopy is difficult tomeasure and calculate, a method based on 3D laser scanning is proposed point…

Open3D (C++) Improved K-means Clustering Algorithm

PCL Principal Component Analysis (PCA) in 3D Point Cloud C++ code

This C++ code perform Principal Component Analysis (PCA) on a 3D point cloud and project pointcloud to the space spanned by the eigenvectors