tiles.cpp

annie is an ANN, ie, Artificial Neural Network library developed in C++. It can be used to implement

#include <iostream>

#include "annie/annie.h"
#include "annie/Image.h"
#include "annie/Video.h"
#include "ImageCompress.h"
using namespace std;

namespace annie	{

Images makeSubimages(const Image &i, unsigned xSize, unsigned ySize)	{
	assert(!(i.getHeight() % ySize));
	assert(!(i.getWidth() % xSize));

	unsigned py = i.getHeight() / ySize;
	unsigned px = i.getWidth() / xSize;
	Images outImages(px * py);
	for(uint y=0; y<py; y++)
		for(uint x=0; x<px; x++)	{
			Image *si = i.subImage(xSize, ySize,  x * xSize, y * ySize);
			ASSERT(si->getWidth() == xSize);
			ASSERT(si->getHeight() == ySize);
			if(!si)	throw Exception("cannot create sub :(");	///XX
			outImages[y * px + x] = si;
		}
	return outImages;
}

TrainingSet *makeSubImageExamples(const Images &images, vector<Vector> &outExamples) {
	ASSERT(images.size());
	
	outExamples.resize(images.size());
	uint pixels = images[0]->getWidth() * images[0]->getHeight();
	TrainingSet *ts = new TrainingSet(pixels, pixels);
	for(uint w=0; w<images.size(); w++)	{
		outExamples[w] = images[w]->toVector(Image::GRAY_MASK);
		ASSERT(outExamples[w].size() == pixels);
		ts->addIOpair(outExamples[w], outExamples[w]);
	}

	return ts;
}

}	//annie