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SommosSommos
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Merge pull request #1 from VerzatileDev/main
Refactoring and Structural Improvements
2 parents c168663 + cae29c5 commit 7a5238c

15 files changed

Lines changed: 506 additions & 301 deletions

‎C_image_processing/.gitignore‎

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# File created using '.gitignore Generator' for Visual Studio Code: https://bit.ly/vscode-gig
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# Created by https://www.toptal.com/developers/gitignore/api/windows,visualstudiocode,c,c++
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# Edit at https://www.toptal.com/developers/gitignore?templates=windows,visualstudiocode,c,c++
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### C ###
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# Prerequisites
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*.d
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# Object files
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*.o
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*.ko
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*.obj
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*.elf
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# Linker output
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*.ilk
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*.map
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*.exp
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# Precompiled Headers
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*.gch
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*.pch
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# Libraries
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*.lib
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*.a
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*.la
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*.lo
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# Shared objects (inc. Windows DLLs)
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*.dll
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*.so
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*.so.*
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*.dylib
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# Executables
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*.exe
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*.out
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*.app
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*.i*86
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*.x86_64
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*.hex
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# Debug files
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*.dSYM/
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*.su
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*.idb
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*.pdb
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# Kernel Module Compile Results
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*.mod*
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*.cmd
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.tmp_versions/
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modules.order
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Module.symvers
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Mkfile.old
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dkms.conf
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### C++ ###
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# Prerequisites
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# Compiled Object files
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*.slo
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# Precompiled Headers
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# Compiled Dynamic libraries
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# Fortran module files
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*.mod
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*.smod
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# Compiled Static libraries
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*.lai
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# Executables
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### VisualStudioCode ###
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.vscode/*
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!.vscode/settings.json
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!.vscode/tasks.json
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!.vscode/launch.json
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!.vscode/extensions.json
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!.vscode/*.code-snippets
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# Local History for Visual Studio Code
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.history/
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# Built Visual Studio Code Extensions
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*.vsix
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### VisualStudioCode Patch ###
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# Ignore all local history of files
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.history
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.ionide
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### Windows ###
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# Windows thumbnail cache files
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Thumbs.db
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Thumbs.db:encryptable
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ehthumbs.db
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ehthumbs_vista.db
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# Dump file
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*.stackdump
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# Folder config file
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[Dd]esktop.ini
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# Recycle Bin used on file shares
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$RECYCLE.BIN/
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# Windows Installer files
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*.cab
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*.msi
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*.msix
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*.msm
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*.msp
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# Windows shortcuts
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*.lnk
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# End of https://www.toptal.com/developers/gitignore/api/windows,visualstudiocode,c,c++
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# Custom rules (everything added below won't be overriden by 'Generate .gitignore File' if you use 'Update' option)
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output.bmp

assets/images/test_image.bmp renamed to C_image_processing/assets/images/test_image.bmp

File renamed without changes.

filters/black_and_white_filter.c renamed to C_image_processing/filters/black_and_white_filter.c

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#include <stdio.h>
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#define THRESHOLD 128 // define tha value of the threshold for black and white
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#define WHITE 255 // define the value for white pixels
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#define BLACK 0 // define the value for black pixels
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#define CHUNK_SIZE 1024 // define the size of the chunks to read and write
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int black_and_white_filter(inputFile, outputFile) {
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FILE *fileIn = fopen(inputFile, "rb"); // open the input file for reading in binary mode
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FILE *fileOut = fopen(outputFile, "wb+"); // create the output file for writing in binary mode
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int i; // variable to iterate through the image data
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unsigned char byte[54]; // array to store the header information of the image
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unsigned char colorTable[1024]; // array to store the color table of the image
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// check if the input file exists
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if(fileIn == NULL) {
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#define THRESHOLD 128 // define value of threshold for black and white
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#define WHITE 255
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#define BLACK 0
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#define CHUNK_SIZE 1024 // define size of chunks to read and write
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int black_and_white_filter(const char *inputFile, const char *outputFile) {
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FILE *fileIn = fopen(inputFile, "rb");
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FILE *fileOut = fopen(outputFile, "wb+");
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if (fileIn == NULL || fileOut == NULL) {
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printf("File does not exist.\n");
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if (fileIn != NULL) fclose(fileIn);
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if (fileOut != NULL) fclose(fileOut);
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return 1;
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}
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// read the header information of the image
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int i;
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unsigned char byte[54];
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unsigned char colorTable[1024];
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// read header info of image
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for(i = 0; i < 54; i++) {
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byte[i] = getc(fileIn);
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}
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// write the header information to the output file
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// write header info to output file
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fwrite(byte, sizeof(unsigned char), 54, fileOut);
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// extract the height, width and bitDepth of the image from the header information
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// extract height, width and bitDepth of image from the header information
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int height = *(int*)&byte[18];
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int width = *(int*)&byte[22];
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int bitDepth = *(int*)&byte[28];
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// calculate the size of the image in pixels
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int size = height * width;
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// check if the image has a color table
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if(bitDepth <= 8) {
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// read, and then write the color table from the input file
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fread(colorTable, sizeof(unsigned char), 1024, fileIn);
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fwrite(colorTable, sizeof(unsigned char), 1024, fileOut);
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}
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// array to store the image data in chunks
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unsigned char buffer[CHUNK_SIZE];
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// read and write the image data in chunks until the end of the file is reached
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while(!feof(fileIn)) {
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// read a chunk of image data from the input file
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size_t bytesRead = fread(buffer, sizeof(unsigned char), CHUNK_SIZE, fileIn);
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// apply the threshold to each pixel in the chunk
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for(i = 0; i < bytesRead; i++) {
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buffer[i] = (buffer[i] > THRESHOLD)
@@ -48,9 +59,8 @@ int black_and_white_filter(inputFile, outputFile) {
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// write the thresholded image data to the output file
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fwrite(buffer, sizeof(unsigned char), bytesRead, fileOut);
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}
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// close the input and output files
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fClose(fileIn);
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fclose(fileIn);
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fclose(fileOut);
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// exit
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return 0;
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}

‎C_image_processing/filters/bright_filter.c‎

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#include <stdio.h>
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#include <stdlib.h>
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#define MAX_COLOR 255
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#define BRIGHTNESS 25
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#define CHUNK_SIZE 1024 // define size of the chunks to read and write
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#define THRESHOLD 128 // define threshold value for the brightness condition
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int bright_filter(inputFile, outputFile) {
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FILE *fileIn = fopen(inputFile, "rb");
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FILE *fileOut = fopen(outputFile, "wb+");
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if (fileIn == NULL || fileOut == NULL) {
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printf("File does not exist.\n");
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if (fileIn != NULL) fclose(fileIn);
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if (fileOut != NULL) fclose(fileOut);
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return 1;
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}
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int i;
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unsigned char byte[54]; // store header info of image
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unsigned char colorTable[1024]; // store color table of image
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// read the header info of image
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for(i = 0; i < 54; i++) {
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byte[i] = getc(fileIn);
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}
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// write header info to output file
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fwrite(byte, sizeof(unsigned char), 54, fileOut);
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// extract height, width and bitDepth of image from header info
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int height = *(int*)&byte[18];
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int width = *(int*)&byte[22];
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int bitDepth = *(int*)&byte[28];
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// calculate size of image in pixels
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int size = height * width;
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// check if image has a color table
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if(bitDepth <= 8) {
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// read, then write color table from the input file
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fread(colorTable, sizeof(unsigned char), 1024, fileIn);
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fwrite(colorTable, sizeof(unsigned char), 1024, fileOut);
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}
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// array to store image data in chunks
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unsigned char buffer[CHUNK_SIZE];
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// read & write image data in chunks until the end of file is reached
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while(!feof(fileIn)) {
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// read a chunk of image data from input file
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size_t bytesRead = fread(buffer, sizeof(unsigned char), CHUNK_SIZE, fileIn);
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// apply brightness factor to each pixel in the chunk
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for (i = 0; i < bytesRead; i++) {
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buffer[i] = buffer[i] + BRIGHTNESS;
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buffer[i] = (buffer[i] > THRESHOLD) ? MAX_COLOR : buffer[i];
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}
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// write thresholded image data to the output file
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fwrite(buffer, sizeof(unsigned char), bytesRead, fileOut);
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}
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// write thresholded image data to the output file
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fwrite(buffer, sizeof(unsigned char), size, fileOut);
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fClose(fileIn);
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fclose(fileOut);
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return 0;
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}

‎C_image_processing/filters/dark_filter.c‎

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#include <stdio.h>
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#define MAX_COLOR 255
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#define THRESHOLD 40 // define threshold value for darkness
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#define CHUNK_SIZE 1024 // define size of chunks to read and write
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int dark_filter(inputFile, outputFile) {
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FILE *fileIn = fopen(inputFile, "rb");
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FILE *fileOut = fopen(outputFile, "wb+");
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if (fileIn == NULL || fileOut == NULL) {
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printf("File does not exist.\n");
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if (fileIn != NULL) fclose(fileIn);
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if (fileOut != NULL) fclose(fileOut);
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return 1;
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}
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int i;
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unsigned char byte[54]; // store header info of image
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unsigned char colorTable[1024]; // store color table of image
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// read header information of image
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for(i = 0; i < 54; i++) {
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byte[i] = getc(fileIn);
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}
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// write header info to output file
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fwrite(byte, sizeof(unsigned char), 54, fileOut);
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// extract height, width and bitDepth of the image from header information
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int height = *(int*)&byte[18];
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int width = *(int*)&byte[22];
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int bitDepth = *(int*)&byte[28];
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// calculate size of image in pixels
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int size = height * width;
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// check if image has a color table
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if(bitDepth <= 8) {
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// read, then write the color table from input file
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fread(colorTable, sizeof(unsigned char), 1024, fileIn);
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fwrite(colorTable, sizeof(unsigned char), 1024, fileOut);
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}
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// array to store image data in chunks
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unsigned char buffer[CHUNK_SIZE];
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// read & write image data in chunks until end of the file reached
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while(!feof(fileIn)) {
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// read a chunk of image data from input file
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size_t bytesRead = fread(buffer, sizeof(unsigned char), CHUNK_SIZE, fileIn);
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// apply darkness threshold to each pixel in chunk
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for (i = 0; i < bytesRead; i++) {
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buffer[i] = buffer[i] + THRESHOLD;
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buffer[i] = (buffer[i] > THRESHOLD) ? MAX_COLOR : buffer[i];
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}
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// write thresholded image data to the output file
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fwrite(buffer, sizeof(unsigned char), bytesRead, fileOut);
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}
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// write thresholded image data to the output file
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fwrite(buffer, sizeof(unsigned char), size, fileOut);
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fClose(fileIn);
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fclose(fileOut);
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return 0;
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}

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