public void TestBitsToBytes()
{
byte[] bitValues = new byte[]
{
1, 1, 0, 1, 0, 1, 0, 1,
0, 0, 1, 1, 1, 1, 0, 0,
};
byte[] byteValues = ImageBytes.BitsToBytes(bitValues);
byte[] expectedByteValues = new byte[]
{
0xD5,
0x3C
};
// Check expected number in array
Assert.AreEqual(expectedByteValues.Length, byteValues.Length);
// Check each bit
for (int i = 0; i < expectedByteValues.Length; i++)
{
Assert.AreEqual(expectedByteValues[i], byteValues[i]);
}
}
public void TestByRegion(string resourcePath)
{
// Load source image
using Image sourceImage = TestImage.FromResource(resourcePath);
Assert.IsNotNull(sourceImage);
Rectangle region = new(0, 0, sourceImage.Width / 2, sourceImage.Height / 2);
// Crop region of image
using Image croppedImage = ImageCrop.ByRegion(sourceImage, region);
Assert.IsNotNull(croppedImage);
// Check size
Assert.AreEqual(region.Width, croppedImage.Width);
Assert.AreEqual(region.Height, croppedImage.Height);
// Get bytes for each image
byte[] sourceBytes = ImageBytes.FromImage(sourceImage);
byte[] croppedBytes = ImageBytes.FromImage(sourceImage);
// Compare to ensure correct region cropped
int limit = croppedImage.Width * croppedImage.Height;
for (int i = 0; i < limit; i++)
{
Assert.AreEqual(sourceBytes[i], croppedBytes[i]);
}
}
public void TestFromSourceToDestination(string resourcePath)
{
// Load source image
using Bitmap sourceBitmap = TestImage.FromResource(resourcePath) as Bitmap;
Assert.IsNotNull(sourceBitmap);
// Create blank bitmap
using Bitmap copyBitmap = new(sourceBitmap.Width, sourceBitmap.Height, sourceBitmap.PixelFormat);
// Crop region of image
ImageCopy.FromSourceToDestination(sourceBitmap, copyBitmap);
// Check size
Assert.AreEqual(sourceBitmap.Width, copyBitmap.Width);
Assert.AreEqual(sourceBitmap.Height, copyBitmap.Height);
// Get bytes for each image
byte[] sourceBytes = ImageBytes.FromImage(sourceBitmap);
byte[] copiedBytes = ImageBytes.FromImage(copyBitmap);
// Compare to ensure correct copy matches
int limit = System.Math.Min(sourceBytes.Length, copiedBytes.Length);
for (int i = 0; i < limit; i++)
{
Assert.AreEqual(sourceBytes[i], copiedBytes[i]);
}
}
public void TestBytesGetMaxValue()
{
const string ResourcePath = "Freedom35.ImageProcessing.Tests.Resources.clock.bmp";
using Image image = TestImage.FromResource(ResourcePath);
byte max = ImageBytes.GetMaxValue(image);
Assert.AreEqual(0xff, max);
}
public void TestCombineAllWithNegative()
{
string resourcePath = "Freedom35.ImageProcessing.Tests.Resources.clock.bmp";
// Load source image
using Image sourceImage = TestImage.FromResource(resourcePath);
Assert.IsNotNull(sourceImage);
using Image negativeCopy = ImageColor.ToNegative(sourceImage);
Assert.IsNotNull(negativeCopy);
Image[] imagesToCombine = new Image[]
{
sourceImage,
negativeCopy
};
Bitmap combinedImage = ImageCombine.All(imagesToCombine);
// Get bytes for images
byte[] combinedBytes = ImageBytes.FromImage(combinedImage);
// Just check first row of bytes has been combined
for (int i = 0; i < combinedImage.Width; i++)
{
Assert.AreEqual(byte.MaxValue, combinedBytes[i]);
}
int pixelDepth = 3;
int stride = 1056;
int width = 1053;
int height = combinedImage.Height;
int limit = combinedBytes.Length - 4;
// Compare combined bytes excluding stride padding
for (int y = 0; y < height; y++)
{
int offset = y * stride;
for (int x = 0; x < width; x += pixelDepth)
{
int i = offset + x;
if (i < limit)
{
Assert.AreEqual(byte.MaxValue, combinedBytes[i]);
}
else
{
break;
}
}
}
}
public void TestBytesGetMinMaxValue()
{
const string ResourcePath = "Freedom35.ImageProcessing.Tests.Resources.clock.bmp";
using Image image = TestImage.FromResource(ResourcePath);
Tuple <byte, byte> minMax = ImageBytes.GetMinMaxValue(image);
Assert.AreEqual(0x00, minMax.Item1);
Assert.AreEqual(0xff, minMax.Item2);
}
public void TestFromResource(string resourcePath)
{
byte[] imageBytes = ImageBytes.FromResource(resourcePath);
Assert.IsNotNull(imageBytes);
// Check not an empty array
Assert.IsTrue(imageBytes.Length > 0);
// Check for variation in values
Assert.IsTrue(imageBytes.Any(b => b > byte.MinValue && b < byte.MaxValue));
}
public static bool Compare(Image image1, Image image2)
{
byte[] imageBytes1 = ImageBytes.FromImage(image1);
byte[] imageBytes2 = ImageBytes.FromImage(image2);
bool match = imageBytes1.Length == imageBytes2.Length;
for (int i = 0; match && i < imageBytes1.Length; i++)
{
match = imageBytes1[i] == imageBytes2[i];
}
return(match);
}
public void TestTryGetImageType(byte[] imageBytes, ImageType expectedType)
{
ImageType type;
if (expectedType == ImageType.Unknown)
{
// Should fail - unable to determine type
Assert.IsFalse(ImageBytes.TryGetImageType(imageBytes, out type));
}
else
{
Assert.IsTrue(ImageBytes.TryGetImageType(imageBytes, out type));
}
Assert.AreEqual(expectedType, type);
}
public void TestBytesGetAvgValue()
{
const string ResourcePath = "Freedom35.ImageProcessing.Tests.Resources.clock.bmp";
using Image image = TestImage.FromResource(ResourcePath);
byte avg = ImageBytes.GetAverageValue(image);
// Average for image
Assert.AreEqual(0x8d, avg);
avg = ImageBytes.GetAverageValue(image, 0x22, 0x24);
// Average in range
Assert.AreEqual(0x23, avg);
}
public void TestApplyThresholdValue(string sourceResourcePath)
{
// Load source image
using Image sourceImage = TestImage.FromResource(sourceResourcePath);
Assert.IsNotNull(sourceImage);
// Apply threshold
using Image thresholdImage = ImageThreshold.Apply(sourceImage, 0x40);
Assert.IsNotNull(thresholdImage);
byte[] withoutAlphaBytes = RemoveAlphaLayerBytes(ImageBytes.FromImage(thresholdImage), sourceImage.PixelFormat);
// Check bytes thresholded
Assert.IsTrue(withoutAlphaBytes.Take(sourceImage.Width).All(b => b == byte.MinValue || b == byte.MaxValue));
}
public void TestApplyMin(string sourceResourcePath)
{
// Load source image
using Image sourceImage = TestImage.FromResource(sourceResourcePath);
Assert.IsNotNull(sourceImage);
// Apply min value
using Image minImage = ImageThreshold.ApplyMin(sourceImage, 0x20);
Assert.IsNotNull(minImage);
byte[] withoutAlphaBytes = RemoveAlphaLayerBytes(ImageBytes.FromImage(minImage), sourceImage.PixelFormat);
// Check all greater than value
Assert.IsTrue(withoutAlphaBytes.All(b => b >= 0x20));
}
public void TestApplyMinMax(string sourceResourcePath)
{
// Load source image
using Image sourceImage = TestImage.FromResource(sourceResourcePath);
Assert.IsNotNull(sourceImage);
// Apply min/max value
using Image minMaxImage = ImageThreshold.ApplyMinMax(sourceImage, 0x25, 0xc3);
Assert.IsNotNull(minMaxImage);
byte[] withoutAlphaBytes = RemoveAlphaLayerBytes(ImageBytes.FromImage(minMaxImage), sourceImage.PixelFormat);
// Check all within range
Assert.IsTrue(withoutAlphaBytes.All(b => b >= 0x25 && b <= 0xc3));
}
public override int GetHashCode()
{
int hash = 1;
if (Id.Length != 0)
{
hash ^= Id.GetHashCode();
}
if (Message.Length != 0)
{
hash ^= Message.GetHashCode();
}
if (Value != 0D)
{
hash ^= pbc::ProtobufEqualityComparers.BitwiseDoubleEqualityComparer.GetHashCode(Value);
}
if (ImageBytes.Length != 0)
{
hash ^= ImageBytes.GetHashCode();
}
if (oneOfFieldCase_ == OneOfFieldOneofCase.StringOneof)
{
hash ^= StringOneof.GetHashCode();
}
if (oneOfFieldCase_ == OneOfFieldOneofCase.BoolOneof)
{
hash ^= BoolOneof.GetHashCode();
}
if (oneOfFieldCase_ == OneOfFieldOneofCase.MessageOneof)
{
hash ^= MessageOneof.GetHashCode();
}
hash ^= (int)oneOfFieldCase_;
if (_unknownFields != null)
{
hash ^= _unknownFields.GetHashCode();
}
return(hash);
}
public void TestCombineAllOne()
{
using Image sourceImage = TestImage.FromResource("Freedom35.ImageProcessing.Tests.Resources.clock.bmp");
Assert.IsNotNull(sourceImage);
Image[] imagesToCombine = new Image[]
{
sourceImage
};
// Combine
Bitmap combinedBitmap = ImageCombine.All(imagesToCombine);
// Convert for byte comparison
byte[] sourceBytes = ImageBytes.FromImage(sourceImage);
byte[] combinedBytes = ImageBytes.FromImage(combinedBitmap);
// Should return the same image when only combining one
for (int i = 0; i < sourceImage.Width; i++)
{
Assert.AreEqual(sourceBytes[i], combinedBytes[i]);
}
}
public void TestIsImageType(byte[] imageBytes, ImageType expectedType)
{
Assert.IsTrue(ImageBytes.IsImageType(imageBytes, expectedType));
}
