generated from freudenreichan/info2Praktikum-NeuronalesNetz
Got a compiled Version that runs all the Test. Still 4 Test Failures present
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65da22f564
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75
imageInput.c
75
imageInput.c
@ -31,31 +31,36 @@ int checkString (FILE *file){ //Checks if String at the start of File equals exp
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}
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void setParameters(FILE* file, unsigned int* imageCount, unsigned int* width, unsigned int* height);
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void allocateMemory(GrayScaleImageSeries *series, const int imageCount, const int width, const int height);
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int allocateMemory(GrayScaleImageSeries *series, const int imageCount, const int width, const int height);
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// TODO Vervollständigen Sie die Funktion readImages unter Benutzung Ihrer Hilfsfunktionen
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GrayScaleImageSeries *readImages(const char *path)
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{
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FILE* file = fopen(path, "rb");
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if(!(checkString(file)))
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if(!(checkString(file))){
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fclose(file);
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return NULL;
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}
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// TODO open binary file from file name
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unsigned int width, height; //uninitialised Variables, will be set by setparamters
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GrayscaleImageSeries *series = malloc(sizeof(GrayScaleImageSeries)); //Reserving memory for series
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GrayScaleImageSeries *series = malloc(sizeof(GrayScaleImageSeries)); //Reserving memory for series
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setParameters(file, &(series->count), &width, &height); //setting parameters taken from image file
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if(!allocateMemory(series, width, height)){
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if(!allocateMemory(series, series->count, width, height)){
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clearSeries(series); //If Memory couldnt be correctly allocated a clearing is necessary
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fclose(file);
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return NULL;
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}
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//Getting image data
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for(int i = 0; i < series.count ; i++){ //Iterating for every image
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for(int j = 0; j < series.count; j++){ //Iterating for every pixel
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for(unsigned int i = 0; i < series->count ; i++){ //Iterating for every image
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for(unsigned int j = 0; j < width * height; j++){ //Iterating for every pixel
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fread(&(series->images[i].buffer[j]), sizeof(GrayScalePixelType), 1, file);
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}
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}
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@ -66,19 +71,19 @@ GrayScaleImageSeries *readImages(const char *path)
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// TODO Vervollständigen Sie die Funktion clearSeries, welche eine Bildserie vollständig aus dem Speicher freigibt
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void clearSeries(GrayScaleImageSeries *series)
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{
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printf("ClearSeries BP1\n");
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for(int i = series->count - 1; i >= 0; i--)
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if (!series)
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return;
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//Freeing Pixelbuffer for every image
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for(unsigned int i = 0; i < series->count; i++)
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{
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free(series->images+series->count*sizeof(GrayScaleImage)*i);//Muss Falsch sein
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free(series->labels+series->count*sizeof(unsigned char)*i);
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free(series->images[i].buffer);
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}
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printf("ClearSeries BP2\n");
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series->images = NULL;
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series->labels = NULL;
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free(series->images); //Freeing Images array
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free(series);
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free(series->labels); //Freeing Labels
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free(series); //Freeing Main Structure
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series = NULL;
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}
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void setParameters(FILE* file, unsigned int* imageCount, unsigned int* width, unsigned int* height) { // sets the parameters
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@ -86,6 +91,13 @@ void setParameters(FILE* file, unsigned int* imageCount, unsigned int* width, un
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fseek(file, 27, SEEK_SET);
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fread(buffer, 1, 3, file);
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if(fread(buffer, 1, 3, file) != 3){
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*imageCount = 0;
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*width = 0;
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*height = 0;
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return;} //Stops if file is too short and clean up
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*imageCount = (int) buffer[0];
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@ -97,14 +109,33 @@ void setParameters(FILE* file, unsigned int* imageCount, unsigned int* width, un
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// TODO read from file and write in 2d arry, write label in labels array, repeat for imageCount -> done in readImages
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}
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// change this to createMatrix?
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void allocateMemory(GrayScaleImageSeries *series, const int imageCount, const int width, const int height) {
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series->images = malloc (sizeof(GrayScaleImage) * imageCount); //Reserving Memory for Images Array
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series->labels = malloc (series->count * sizeof(unsigned char)); //One Label for every Image
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for (int i = 0; i < imageCount; i++) {
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series->images[i].buffer = (unsigned char *) malloc(width * height * sizeof(unsigned char)); // allocates memory for every image in the series
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int allocateMemory(GrayScaleImageSeries *series, const int imageCount, const int width, const int height) {
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series->count = imageCount; //counts number of images in series
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series->images = malloc (sizeof(GrayScaleImage) * imageCount); //Reserving Memory for Images Array
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if (series->images == NULL)
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return 0;
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series->labels = malloc (series->count * sizeof(unsigned char)); //One Label for every Image
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if (series->labels == NULL){
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return 0;}
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for (int i = 0; i < imageCount; i++) { //Reserving Memory for every Images Pixelbuffer and setting width and height
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series->images[i].width = width;
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series->images[i].height = height;
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series->images[i].buffer = malloc(width * height * sizeof(unsigned char)); // allocates memory for every image in the series
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if (series->images[i].buffer == NULL){
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for (int j = 0; j < i; j++){
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free(series->images[j].buffer);
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}
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free(series->images);
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free(series->labels);
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return 0;
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}
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}
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return 1;
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}
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