public void CalculatesForBitArray()
{
var imageHandler = new ImageDCTHashCalculator();
var imageHashService = new ImageHashService(imageHandler);
var hashPng = new BitArray(64);
var hashJpg = new BitArray(64);
var hashJpgSmall = new BitArray(64);
using (var pngStream = new FileStream(@"IMG_0.png", FileMode.Open, FileAccess.Read))
{
imageHashService.CalculateImageHash(pngStream, hashPng);
}
using (var jpgStream = new FileStream(@"IMG_0.jpg", FileMode.Open, FileAccess.Read))
{
imageHashService.CalculateImageHash(jpgStream, hashJpg);
}
using (var jpgStream = new FileStream(@"IMG_0_small.jpg", FileMode.Open, FileAccess.Read))
{
imageHashService.CalculateImageHash(jpgStream, hashJpgSmall);
}
Assert.Equal(0, HammingDistance.Calculate(hashPng, hashJpg));
Assert.Equal(1, HammingDistance.Calculate(hashJpgSmall, hashJpg));
}
public void CalculatesDifferentImagesForBitArray()
{
var imageHandler = new ImageDCTHashCalculator();
var imageHashService = new ImageHashService(imageHandler);
var hashJpg = new BitArray(64);
var hashJpgOther = new BitArray(64);
using (var jpgStream = new FileStream(@"IMG_0.jpg", FileMode.Open, FileAccess.Read))
{
imageHashService.CalculateImageHash(jpgStream, hashJpg);
}
using (var jpgStream = new FileStream(@"IMG_18.jpg", FileMode.Open, FileAccess.Read))
{
imageHashService.CalculateImageHash(jpgStream);
}
Assert.InRange(HammingDistance.Calculate(hashJpg, hashJpgOther), 10, 100);
}