forked from freudenreichan/info2Praktikum-NeuronalesNetz
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12
Commits
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No files matched your search
+91
-3
@@ -8,15 +8,103 @@
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// TODO Implementieren Sie geeignete Hilfsfunktionen für das Lesen der Bildserie aus einer Datei
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/* Liest den Datei-Header sowie Anzahl und Abmessungen der Bilder. */
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static int readFileHeader(FILE *file, unsigned short *count, unsigned short *width, unsigned short *height)
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{
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char tag[sizeof(FILE_HEADER_STRING) - 1];
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return fread(tag, sizeof(tag), 1, file) == 1 &&
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memcmp(tag, FILE_HEADER_STRING, sizeof(tag)) == 0 && /* vergleicht File-Header mit dem erwarteten Wert */
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fread(count, sizeof(*count), 1, file) == 1 &&
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fread(width, sizeof(*width), 1, file) == 1 &&
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fread(height, sizeof(*height), 1, file) == 1 &&
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*count > 0 && *width > 0 && *height > 0;
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}
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/* Liest die Pixel und das unmittelbar folgende Label eines Bildes. */
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static int readImage(FILE *file, GrayScaleImage *image, unsigned char *label, size_t pixelCount)
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{
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image->buffer = (GrayScalePixelType *)malloc(pixelCount);
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if (image->buffer == NULL || fread(image->buffer, sizeof(*image->buffer), pixelCount, file) != pixelCount || fread(label, sizeof(*label), 1, file) != 1) /*Prüft ob Speicher korrekt reserviert wurde */
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{
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free(image->buffer);
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image->buffer = NULL;
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return 0;
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}
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return 1;
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}
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/* Gibt auch bereits teilweise geladene Serien und deren Pixelpuffer frei. */
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static void freeImages(GrayScaleImageSeries *series)
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{
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if (series == NULL) /*Prüft ob Serie übergeben Wurde*/
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return;
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if (series->images != NULL)
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{
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for (unsigned int i = 0; i < series->count; ++i) /* Prüft jedes bIld der Serie*/
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free(series->images[i].buffer);
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}
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free(series->images);
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free(series->labels);
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free(series);
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}
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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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GrayScaleImageSeries *series = NULL;
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unsigned short count, width, height;
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size_t pixelCount;
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FILE *file;
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if (path == NULL || (file = fopen(path, "rb")) == NULL) /*prüft ob sich Pfad öffnen lässt*/
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return 0;
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/* Zuerst den Header prüfen, bevor Speicher reserviert wird */
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if (!readFileHeader(file, &count, &width, &height))
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{
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fclose(file);
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freeImages(series);
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return 0;
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}
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pixelCount = (size_t)width * height;
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series = (GrayScaleImageSeries *)calloc(1, sizeof(*series)); /*Speicher für Serie reservieren*/
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if (series == NULL)
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{
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fclose(file);
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freeImages(series);
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return 0;
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}
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series->count = count; /*speicher die anzahl der Bilder*/
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series->images = (GrayScaleImage *)calloc(count, sizeof(*series->images));
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series->labels = (unsigned char *)malloc(count * sizeof(*series->labels));
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if (series->images == NULL || series->labels == NULL)
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{
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fclose(file);
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freeImages(series);
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return 0;
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}
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/*Parameter jedes Bildes einlesen*/
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for (unsigned int i = 0; i < count; ++i)
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{
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series->images[i].width = width;
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series->images[i].height = height;
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if (!readImage(file, &series->images[i], &series->labels[i], pixelCount))
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{
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fclose(file);
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freeImages(series);
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return 0;
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}
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}
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fclose(file);
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return series;
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}
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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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}
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freeImages(series);
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}
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@@ -119,6 +119,17 @@ void test_readImagesFailsOnWrongFileTag(void)
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remove(path);
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}
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void test_readImagesFailsOnZeroWidth(void)
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{
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const char *path = "testFile.info2";
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prepareImageFile(path, 0, 8, 1, 1);
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TEST_ASSERT_NULL(readImages(path));
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remove(path);
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}
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void setUp(void) {
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// Falls notwendig, kann hier Vorbereitungsarbeit gemacht werden
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}
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@@ -138,6 +149,7 @@ int main()
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RUN_TEST(test_readImagesReturnsCorrectLabels);
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RUN_TEST(test_readImagesReturnsNullOnNotExistingPath);
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RUN_TEST(test_readImagesFailsOnWrongFileTag);
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RUN_TEST(test_readImagesFailsOnZeroWidth);
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return UNITY_END();
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}
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+130
-2
@@ -6,30 +6,158 @@
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Matrix createMatrix(unsigned int rows, unsigned int cols)
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{
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if (rows == 0 || cols == 0) {
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return (Matrix){0}; // Setzt rows, cols und den Puffer auf 0/NULL
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}
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Matrix m;
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m.rows = rows;
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m.cols = cols;
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// Speicher reservieren und mit 0 initialisieren
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m.buffer = (MatrixType *)calloc((size_t)rows * cols, sizeof(MatrixType));
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// Falls Arbeitsspeicher voll ist
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if (m.buffer == NULL) {
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m.rows = 0;
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m.cols = 0;
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}
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return m;
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}
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void clearMatrix(Matrix *matrix)
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{
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//prüfen ob pointer exisitert und ob es einen buffer gibt
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if (matrix != NULL && matrix->buffer != NULL)
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{
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// Speicher freigeben
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free(matrix->buffer);
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// Werte zurücksetzen
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matrix->buffer = NULL;
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matrix->rows = 0;
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matrix->cols = 0;
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}
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}
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void setMatrixAt(MatrixType value, Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
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{
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// Sind Idx innerhalb der Matrix?
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if (matrix.buffer != NULL && rowIdx < matrix.rows && colIdx < matrix.cols)
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{
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// Umrechnung von 2D auf 1D
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matrix.buffer[rowIdx * matrix.cols + colIdx] = value;
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}
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}
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MatrixType getMatrixAt(const Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
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{
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// Sicherheitsprüfung wie beim setzen
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if (matrix.buffer != NULL && rowIdx < matrix.rows && colIdx < matrix.cols)
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{
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return matrix.buffer[rowIdx * matrix.cols + colIdx];
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}
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// Fehlerwert, falls außerhalb der grenzen
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return UNDEFINED_MATRIX_VALUE;
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}
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Matrix add(const Matrix matrix1, const Matrix matrix2)
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{
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// Prüfen ob Zeilenanzahl gleich ist und ob buffer existieren
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if (matrix1.buffer == NULL || matrix2.buffer == NULL || matrix1.rows != matrix2.rows)
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{
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return (Matrix){0};
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}
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// Wenn beide Matrixen gleich groß sind:
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if (matrix1.cols == matrix2.cols)
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{
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Matrix result = createMatrix(matrix1.rows, matrix1.cols);
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if (result.buffer == NULL) return (Matrix){0};
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unsigned int totalElements = matrix1.rows * matrix1.cols;
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for (unsigned int i = 0; i < totalElements; i++)
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{
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result.buffer[i] = matrix1.buffer[i] + matrix2.buffer[i];
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}
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return result;
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}
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//Wenn matrix2 ein Spaltenvektor ist
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else if (matrix2.cols == 1)
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{
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Matrix result = createMatrix(matrix1.rows, matrix1.cols);
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if (result.buffer == NULL) return (Matrix){0};
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for (unsigned int r = 0; r < matrix1.rows; r++)
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{
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for (unsigned int c = 0; c < matrix1.cols; c++)
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{
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// Wert mit r und c aus m1 + Wert mit r aus m2
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result.buffer[r * matrix1.cols + c] = matrix1.buffer[r * matrix1.cols + c] + matrix2.buffer[r];
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}
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}
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return result;
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}
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//Wenn matrix1 ein Spaltenvektor ist
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else if (matrix1.cols == 1)
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{
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Matrix result = createMatrix(matrix2.rows, matrix2.cols);
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if (result.buffer == NULL) return (Matrix){0};
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for (unsigned int r = 0; r < matrix2.rows; r++)
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{
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for (unsigned int c = 0; c < matrix2.cols; c++)
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{
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//gleich wie davor nur m1 und m2 getauscht
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result.buffer[r * matrix2.cols + c] = matrix2.buffer[r * matrix2.cols + c] + matrix1.buffer[r];
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}
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}
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return result;
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}
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return (Matrix){0};
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}
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Matrix multiply(const Matrix matrix1, const Matrix matrix2)
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{
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// Überprüfen, ob die Matrizen gültig sind und ob ihre Dimensionen eine Multiplikation erlauben
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if (matrix1.buffer == NULL || matrix2.buffer == NULL || matrix1.cols != matrix2.rows)
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{
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return (Matrix){0};
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}
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// Ergebnismatrix erstellen
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Matrix result = createMatrix(matrix1.rows, matrix2.cols);
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// Überprüfen, ob die Speicherreservierung erfolgreich war
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if (result.buffer == NULL)
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{
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return (Matrix){0};
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}
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// Jede Zeile der ersten Matrix durchlaufen
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for (unsigned int i = 0; i < matrix1.rows; i++)
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{
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// Jede Spalte der zweiten Matrix durchlaufen
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for (unsigned int j = 0; j < matrix2.cols; j++)
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{
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MatrixType sum = 0;
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// Summe der Produkte berechnen
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for (unsigned int k = 0; k < matrix1.cols; k++)
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{
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sum += matrix1.buffer[i * matrix1.cols + k] *
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matrix2.buffer[k * matrix2.cols + j];
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}
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// Berechneten Wert in der Ergebnismatrix speichern
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result.buffer[i * result.cols + j] = sum;
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}
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}
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return result;
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}
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+2
-2
@@ -7,9 +7,9 @@ typedef float MatrixType;
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// TODO Matrixtyp definieren
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typedef struct {
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MatrixType *buffer;
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unsigned int rows;
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unsigned int cols;
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MatrixType *buffer; // Speichert die Matrixwerte in einem Array, zeigt die Speicheradresse des ersten Matrixwerts im Array
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} Matrix;
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@@ -21,4 +21,4 @@ Matrix add(const Matrix matrix1, const Matrix matrix2);
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Matrix multiply(const Matrix matrix1, const Matrix matrix2);
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#endif
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#endif
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@@ -9,6 +9,39 @@
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static void prepareNeuralNetworkFile(const char *path, const NeuralNetwork nn)
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{
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// TODO
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FILE *file = fopen(path, "wb");
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if (file == NULL)
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{
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return;
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}
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const char *fileTag = "__info2_neural_network_file_format__";
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fwrite(fileTag, sizeof(char), strlen(fileTag), file);
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if (nn.numberOfLayers > 0)
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{
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fwrite(&nn.layers[0].weights.cols, sizeof(int), 1, file);
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fwrite(&nn.layers[0].weights.rows, sizeof(int), 1, file);
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for (unsigned int i = 0; i < nn.numberOfLayers; i++)
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{
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if (i > 0)
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{
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fwrite(&nn.layers[i].weights.rows, sizeof(int), 1, file);
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}
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fwrite(nn.layers[i].weights.buffer, sizeof(MatrixType),
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nn.layers[i].weights.rows * nn.layers[i].weights.cols, file);
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fwrite(nn.layers[i].biases.buffer, sizeof(MatrixType),
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nn.layers[i].biases.rows * nn.layers[i].biases.cols, file);
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}
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}
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int endDimension = 0;
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fwrite(&endDimension, sizeof(int), 1, file);
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fclose(file);
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}
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void test_loadModelReturnsCorrectNumberOfLayers(void)
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+110
@@ -0,0 +1,110 @@
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "imageInput.h"
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#define BUFFER_SIZE 100
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#define FILE_HEADER_STRING "__info2_image_file_format__"
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|
||||
// TODO Implementieren Sie geeignete Hilfsfunktionen für das Lesen der Bildserie aus einer Datei
|
||||
|
||||
/* Liest den Datei-Header sowie Anzahl und Abmessungen der Bilder. */
|
||||
static int readFileHeader(FILE *file, unsigned short *count, unsigned short *width, unsigned short *height)
|
||||
{
|
||||
char tag[sizeof(FILE_HEADER_STRING) - 1];
|
||||
|
||||
return fread(tag, sizeof(tag), 1, file) == 1 &&
|
||||
memcmp(tag, FILE_HEADER_STRING, sizeof(tag)) == 0 && /* vergleicht File-Header mit dem erwarteten Wert */
|
||||
fread(count, sizeof(*count), 1, file) == 1 &&
|
||||
fread(width, sizeof(*width), 1, file) == 1 &&
|
||||
fread(height, sizeof(*height), 1, file) == 1 &&
|
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*count > 0 && *width > 0 && *height > 0;
|
||||
}
|
||||
|
||||
/* Liest die Pixel und das unmittelbar folgende Label eines Bildes. */
|
||||
static int readImage(FILE *file, GrayScaleImage *image, unsigned char *label, size_t pixelCount)
|
||||
{
|
||||
image->buffer = (GrayScalePixelType *)malloc(pixelCount);
|
||||
if (image->buffer == NULL || fread(image->buffer, sizeof(*image->buffer), pixelCount, file) != pixelCount || fread(label, sizeof(*label), 1, file) != 1) /*Prüft ob Speicher korrekt reserviert wurde */
|
||||
{
|
||||
free(image->buffer);
|
||||
image->buffer = NULL;
|
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return 0;
|
||||
}
|
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return 1;
|
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}
|
||||
|
||||
/* Gibt auch bereits teilweise geladene Serien und deren Pixelpuffer frei. */
|
||||
static void freeImages(GrayScaleImageSeries *series)
|
||||
{
|
||||
if (series == NULL) /*Prüft ob Serie übergeben Wurde*/
|
||||
return;
|
||||
if (series->images != NULL)
|
||||
{
|
||||
for (unsigned int i = 0; i < series->count; ++i) /* Prüft jedes bIld der Serie*/
|
||||
free(series->images[i].buffer);
|
||||
}
|
||||
free(series->images);
|
||||
free(series->labels);
|
||||
free(series);
|
||||
}
|
||||
// TODO Vervollständigen Sie die Funktion readImages unter Benutzung Ihrer Hilfsfunktionen
|
||||
GrayScaleImageSeries *readImages(const char *path)
|
||||
{
|
||||
GrayScaleImageSeries *series = NULL;
|
||||
unsigned short count, width, height;
|
||||
size_t pixelCount;
|
||||
FILE *file;
|
||||
|
||||
if (path == NULL || (file = fopen(path, "rb")) == NULL) /*prüft ob sich Pfad öffnen lässt*/
|
||||
return 0;
|
||||
|
||||
/* Zuerst den Header prüfen, bevor Speicher reserviert wird */
|
||||
if (!readFileHeader(file, &count, &width, &height))
|
||||
{
|
||||
fclose(file);
|
||||
freeImages(series);
|
||||
return 0;
|
||||
}
|
||||
|
||||
pixelCount = (size_t)width * height;
|
||||
series = (GrayScaleImageSeries *)calloc(1, sizeof(*series)); /*Speicher für Serie reservieren*/
|
||||
if (series == NULL)
|
||||
{
|
||||
|
||||
fclose(file);
|
||||
freeImages(series);
|
||||
return 0;
|
||||
}
|
||||
|
||||
series->count = count; /*speicher die anzahl der Bilder*/
|
||||
series->images = (GrayScaleImage *)calloc(count, sizeof(*series->images));
|
||||
series->labels = (unsigned char *)malloc(count * sizeof(*series->labels));
|
||||
if (series->images == NULL || series->labels == NULL)
|
||||
{
|
||||
fclose(file);
|
||||
freeImages(series);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*Parameter jedes Bildes einlesen*/
|
||||
for (unsigned int i = 0; i < count; ++i)
|
||||
{
|
||||
series->images[i].width = width;
|
||||
series->images[i].height = height;
|
||||
if (!readImage(file, &series->images[i], &series->labels[i], pixelCount))
|
||||
{
|
||||
fclose(file);
|
||||
freeImages(series);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
fclose(file);
|
||||
return series;
|
||||
}
|
||||
|
||||
void clearSeries(GrayScaleImageSeries *series)
|
||||
{
|
||||
freeImages(series);
|
||||
}
|
||||
Reference in new issue
Block a user