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18 Commits
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6
.gitignore
vendored
6
.gitignore
vendored
@ -2,3 +2,9 @@ mnist
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runTests
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*.o
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*.exe
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.vscode/settings.json
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.vscode/launch.json
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.vscode/settings.json
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.vscode/settings.json
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runImageInputTests
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testFile.info2
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3
.vscode/settings.json
vendored
Normal file
3
.vscode/settings.json
vendored
Normal file
@ -0,0 +1,3 @@
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{
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"makefile.configureOnOpen": false
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}
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33
imageInput.c
33
imageInput.c
@ -7,11 +7,43 @@
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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
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GrayScaleImage readImage()
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{
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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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unsigned short * numImages;
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unsigned short * breiteBilder;
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unsigned short * laengeBilder;
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GrayScaleImageSeries *series = NULL;
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FILE *file = fopen(*path,"rb");
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char * headOfFile;
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fread(headOfFile, sizeof(FILE_HEADER_STRING),1, file); //liest den header ein und überprüft ob korrekte datei
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if(strcmp(headOfFile, FILE_HEADER_STRING) != 0)
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return NULL;
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// liest numIMages, breite und länge der Bilder ein
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fseek(file, sizeof(FILE_HEADER_STRING), SEEK_SET);
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fread(numImages, sizeof(short), 1, file);
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fseek(file, sizeof(short), SEEK_CUR);
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fread(breiteBilder, sizeof(short), 1, file);
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fseek(file, sizeof(short), SEEK_CUR);
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fread(laengeBilder, sizeof(short), 1, file);
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series = malloc(*numImages * *breiteBilder * *laengeBilder * sizeof(short));
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for(int i = 0; i < numImages; i++)
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{
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}
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return series;
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}
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@ -19,4 +51,5 @@ 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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}
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4
makefile
4
makefile
@ -63,4 +63,6 @@ ifeq ($(OS),Windows_NT)
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else
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rm -f *.o mnist runMatrixTests runNeuralNetworkTests runImageInputTests
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endif
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clean für windows
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clean:
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rm -f *.o *.exe
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81
matrix.c
81
matrix.c
@ -1,35 +1,68 @@
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#include "matrix.h"
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#include <stdlib.h>
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#include <string.h>
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#include "matrix.h"
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// TODO Matrix-Funktionen implementieren
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/*typedef struct {
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unsigned int rows; //Zeilen
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unsigned int cols; //Spalten
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MatrixType *buffer; //Zeiger auf Speicherbereich Reihen*Spalten
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} Matrix;*/
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Matrix createMatrix(unsigned int rows, unsigned int cols) {
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MatrixType *buffer =
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malloc(rows * cols * sizeof(MatrixType)); // Speicher reservieren, malloc
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// liefert Zeiger auf Speicher
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Matrix newMatrix = {rows, cols, buffer}; // neue Matrix nach struct
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return newMatrix;
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}
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void clearMatrix(Matrix *matrix) {
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matrix->buffer = UNDEFINED_MATRIX_VALUE;
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matrix->rows = UNDEFINED_MATRIX_VALUE;
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matrix->cols = UNDEFINED_MATRIX_VALUE;
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free((*matrix).buffer); // Speicher freigeben
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}
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void setMatrixAt(const MatrixType value, Matrix matrix,
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const unsigned int rowIdx, // Kopie der Matrix wird übergeben
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const unsigned int colIdx) {
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Matrix createMatrix(unsigned int rows, unsigned int cols)
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{
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matrix.buffer[rowIdx * matrix.cols + colIdx] =
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value; // rowIdx * matrix.cols -> Beginn der Zeile colIdx ->Spalte
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// innerhalb der Zeile
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}
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MatrixType getMatrixAt(const Matrix matrix,
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unsigned int rowIdx, // Kopie der Matrix wird übergeben
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unsigned int colIdx) {
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if (rowIdx >= matrix.rows ||
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colIdx >= matrix.cols) { // Speichergröße nicht überschreiten
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return 0;
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}
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void clearMatrix(Matrix *matrix)
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{
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MatrixType value = matrix.buffer[rowIdx * matrix.cols + colIdx];
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return value;
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}
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Matrix add(const Matrix matrix1, const Matrix matrix2) {
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Matrix result;
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const int cols1 = matrix1.cols;
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const int rows1 = matrix1.rows;
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const int cols2 = matrix2.cols;
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const int rows2 = matrix2.rows;
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const int colsEqu = (matrix1.cols == matrix2.cols) ? 1 : 0;
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const int rowsEqu = (matrix1.rows == matrix2.rows) ? 1 : 0;
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if(colsEqu && rowsEqu)
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{
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Matrix result = createMatrix(matrix1.rows, matrix1.cols);
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for(int i = 0; i < rows1; i++)
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{
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for (int j = 0; j < cols1; j++)
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{
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int valueM1 = getMatrixAt(matrix1, i, j);
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int valueM2 =getMatrixAt(matrix2, i, j);
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int sum = valueM1 + valueM2;
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setMatrixAt(sum, result,i,j);
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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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return result;
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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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}
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Matrix add(const Matrix matrix1, const Matrix matrix2)
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{
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}
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Matrix multiply(const Matrix matrix1, const Matrix matrix2)
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{
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}
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Matrix multiply(const Matrix matrix1, const Matrix matrix2) { return matrix1; }
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12
matrix.h
12
matrix.h
@ -6,14 +6,20 @@
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typedef float MatrixType;
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// TODO Matrixtyp definieren
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typedef struct {
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unsigned int rows;
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unsigned int cols;
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MatrixType *buffer;
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} Matrix;
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Matrix createMatrix(unsigned int rows, unsigned int cols);
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void clearMatrix(Matrix *matrix);
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void setMatrixAt(MatrixType value, Matrix matrix, unsigned int rowIdx, unsigned int colIdx);
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MatrixType getMatrixAt(const Matrix matrix, unsigned int rowIdx, unsigned int colIdx);
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void setMatrixAt(MatrixType value, Matrix matrix, unsigned int rowIdx,
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unsigned int colIdx);
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MatrixType getMatrixAt(const Matrix matrix, unsigned int rowIdx,
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unsigned int colIdx);
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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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29
neuralN_readFiles
Normal file
29
neuralN_readFiles
Normal file
@ -0,0 +1,29 @@
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Inhalte: Dynamische Speicherverwaltung, Strukturen, Dateien lesen.
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Ziel: Die Bilder aus mnist_test.info 2 auslesen
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Struktur für einlesen des Strings am Anfang der Datei:
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int AnzahlBilder
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int breiteBilder
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int LaengeBilder
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Struktur für Bilder:
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unsinged int array Breite * Höhe
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unsigned int Klasse (Label 0 - 9)
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Speicher für Bilder dynamisch allokieren
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GrayScaleImageSeries:
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datei einlesen
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header String aus der Datei lesen
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mit header String den benötigten Speicher freigeben
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in den Speicher die Datei einschreiben (mit Hilfsfunktion)
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Hilfsfunktion (saveFile)
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gehe zum Anfang des Strings
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speicher alles der Reihe nach ein
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clearSeries:
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pointer der be malloc kommt nehemen
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free()
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