IProc
A dynamic library for image processing. To Extract the pixel map of the image. Support PNG, JPG, TIF and BMP image file formats. Inbuilt methods for resizing, cropping, generating grayscale and binary images.
Data Structures
RGBAPixel
ImageDataStruct
struct RGBApixel {
unsigned char r = 0;
unsigned char g = 0;
unsigned char b = 0;
unsigned char a = 0;
};
unsigned char r = 0;
unsigned char g = 0;
unsigned char b = 0;
unsigned char a = 0;
};
struct ImageDataStruct {
RGBApixel * imgPixArray;
int imgWidth;
int imgHeight;
};
RGBApixel * imgPixArray;
int imgWidth;
int imgHeight;
};
Methods
int readImage(std::string);
int writeImage(std::string);
RGBApixel getPixel(int,int);
ImageDataStruct getImageDataStruct();
int setPixel(int,int,RGBApixel);
int setImageDataStruct(ImageDataStruct);
int resizeImage(int, int);
int crop(int, int, int, int);
int binary(int);
int grayscale();
reading the image file
IProc ip;
ip.readImage("path/to/source/file.jpg");
ip.readImage("path/to/source/file.jpg");
getting the pixel value
// pixel in the position (x, y)
RGBApixel pix = ip.getPixel(10,10);
RGBApixel pix = ip.getPixel(10,10);
set a pixel value
// set the pixel at position (x, y)
RGBApixel pix;
pix.r = 100;
pix.g = 100;
pix.b = 100;
pix.a = 255;
ip.setPixel(10,15,pix);
RGBApixel pix;
pix.r = 100;
pix.g = 100;
pix.b = 100;
pix.a = 255;
ip.setPixel(10,15,pix);
get the pixel map of the image
ImageDataStruct imgData;
imgData = ip.getImageDataStruct();
// printing the height and width of the image
std::cout<<"Image height: "<std::cout<<"Image width: "<
imgData = ip.getImageDataStruct();
// printing the height and width of the image
std::cout<<"Image height: "<
resize the image
// resize the image (width, height)
imgData.resizeImage(100,20);
// resize the image (width, auto)
imgData.resizeImage(100,-1);
// resize the image (auto, height)
imgData.resizeImage(-1,20);
imgData.resizeImage(100,20);
// resize the image (width, auto)
imgData.resizeImage(100,-1);
// resize the image (auto, height)
imgData.resizeImage(-1,20);
crop the image
// crop the image (row1, col1, row2, col2);
imgData.crop(20,30,80,100);
imgData.crop(20,30,80,100);
get the grayscale pixels of the image
// convert the RGB values to grayscale intensity values
imgData.grayscale();
imgData.grayscale();
get the binary pixel map of the image
// convert the image in to a binary image (grayscale intensity value)
imgData.binary(125);
imgData.binary(125);
write image to a target file
// write image to a given path
imgData.writeImage("path/to/target/file.png");
imgData.writeImage("path/to/target/file.png");
Example
#include <libiproc.h>
#include <iostream>
int main() {
IProc ip;
ip.readImage("imgs/JPEG/input/img5.jpg");
int x = 10, y = 10;
RGBApixel pixel = ip.getPixel(x, y);
std::cout <<"Image("<","<") = "
<<"RGBA( "
<<(int)pixel.r<<" "
<<(int)pixel.g<<" "
<<(int)pixel.b<<" "
<<(int)pixel.a<<" "
<<")\n";
ip.setPixel(10,15,pixel);
ImageDataStruct img = ip.getImageDataStruct();
std::cout<<"image height: "<imgHeight;
std::cout<<"\n";
std::cout<<"image width: "<imgWidth;
ip.writeImage("imgs/PNG/output/img1.png");
ip.readImage("imgs/JPEG/input/img5.jpg");
ip.grayscale();
ip.writeImage("imgs/PNG/output/img2.png");
ip.readImage("imgs/JPEG/input/img5.jpg");
ip.binary(180);
ip.writeImage("imgs/PNG/output/img3.png");
ip.readImage("imgs/JPEG/input/img5.jpg");
ip.resize(100,100);
ip.writeImage("imgs/PNG/output/img4.png");
return 0;
}
#include <iostream>
int main() {
IProc ip;
ip.readImage("imgs/JPEG/input/img5.jpg");
int x = 10, y = 10;
RGBApixel pixel = ip.getPixel(x, y);
std::cout <<"Image("<
<<"RGBA( "
<<(int)pixel.r<<" "
<<(int)pixel.g<<" "
<<(int)pixel.b<<" "
<<(int)pixel.a<<" "
<<")\n";
ip.setPixel(10,15,pixel);
ImageDataStruct img = ip.getImageDataStruct();
std::cout<<"image height: "<
std::cout<<"\n";
std::cout<<"image width: "<
ip.writeImage("imgs/PNG/output/img1.png");
ip.readImage("imgs/JPEG/input/img5.jpg");
ip.grayscale();
ip.writeImage("imgs/PNG/output/img2.png");
ip.readImage("imgs/JPEG/input/img5.jpg");
ip.binary(180);
ip.writeImage("imgs/PNG/output/img3.png");
ip.readImage("imgs/JPEG/input/img5.jpg");
ip.resize(100,100);
ip.writeImage("imgs/PNG/output/img4.png");
return 0;
}
Output
>> Image(10,10) = RGBA( 255 255 255 255 )
>> image height: 250
>> image width: 250
| Original | Grayscale | Binary | Resized |
|---|---|---|---|
