C Language Pixel Data Input and Analysis with STM32IPL: Image Processing Library for STM32 Microcontrollers

# 1. Introduction

In the realm of modern technology, image processing plays an increasingly significant role. With the continuous development and proliferation of embedded systems, the challenge of achieving efficient image processing on resource-constrained embedded devices has become pressing. This article aims to introduce how to read and analyze image pixel data using the C language, as well as to present an image processing library on the STM32 microcontroller. Furthermore, we will delve into practical examples of applying the image processing library on STM32 microcontrollers, aiding readers in better understanding and implementing image processing techniques.

# 2. Reading and Analyzing Image Pixel Data with C Language

In the field of image processing, understanding how to read and analyze image pixel data is fundamental and critical. In C language, we can read image files through file operations and individually access each pixel's RGB values for analysis.

Below is a simple example demonstrating how to read the pixel data of an image (assumed to be a 24-bit true color image) and conduct a basic analysis:

#include <stdio.h>
#include <stdlib.h>

typedef struct {
     unsigned char red;
     unsigned char green;
     unsigned char blue;
} RGBPixel;

int main() {
     FILE *imageFile = fopen("image.bmp", "rb");
     if (!imageFile) {
         perror("Error opening image file");
         return 1;
     }

     fseek(imageFile, 54, SEEK_SET); // Assuming the file header size is 54 bytes

     RGBPixel pixel;
     while (fread(&pixel, sizeof(RGBPixel), 1, imageFile)) {
         printf("Red: %d, Green: %d, Blue: %d\n", pixel.red, pixel.green, pixel.blue);
     }

     fclose(imageFile);

     return 0;
}

With the above code, we can print the RGB values of each pixel in the image, thereby achieving a simple analysis of the image pixel data. In practical applications, we can perform more complex processing and analysis on the pixel data based on our needs.

Next, we will introduce more about image processing libraries and methods for applying image processing libraries on STM32 microcontrollers.

# 3. Overview of Image Processing Libraries

An image processing library is a collecti