def test_fromTif(self): imagepath = os.path.join(self.testresourcesdir, "singlelayer_tif", "dot1_lzw.tif") tifimage = ImagesLoader(self.sc).fromTif(imagepath, self.sc) firsttifimage = tifimage.first() assert_equals(0, firsttifimage[0], "Key error; expected first image key to be 0, was "+str(firsttifimage[0])) expectedshape = (70, 75, 4) # 4 channel tif; RGBalpha assert_true(isinstance(firsttifimage[1], ndarray), "Value type error; expected first image value to be numpy ndarray, was " + str(type(firsttifimage[1]))) assert_equals(expectedshape, firsttifimage[1].shape) assert_equals(248, firsttifimage[1][:, :, 0].flatten().max()) assert_equals(8, firsttifimage[1][:, :, 0].flatten().min())
def test_fromPng(self): imagepath = os.path.join(self.testresourcesdir, "singlelayer_png", "dot1.png") pngimage = ImagesLoader(self.sc).fromPng(imagepath, self.sc) firstpngimage = pngimage.first() assert_equals(0, firstpngimage[0], "Key error; expected first image key to be 0, was "+str(firstpngimage[0])) expectedshape = (70, 75, 4) # 4 channel png; RGBalpha assert_true(isinstance(firstpngimage[1], ndarray), "Value type error; expected first image value to be numpy ndarray, was " + str(type(firstpngimage[1]))) assert_equals(expectedshape, firstpngimage[1].shape) assert_almost_equal(0.97, firstpngimage[1][:, :, 0].flatten().max(), places=2) assert_almost_equal(0.03, firstpngimage[1][:, :, 0].flatten().min(), places=2)
def test_fromTif(self): imagePath = os.path.join(self.testResourcesDir, "singlelayer_tif", "dot1_grey_lzw.tif") tiffImage = ImagesLoader(self.sc).fromTif(imagePath) firstTiffImage = tiffImage.first() assert_equals(0, firstTiffImage[0], "Key error; expected first image key to be 0, was "+str(firstTiffImage[0])) expectedShape = (70, 75) assert_true(isinstance(firstTiffImage[1], ndarray), "Value type error; expected first image value to be numpy ndarray, was " + str(type(firstTiffImage[1]))) assert_equals(expectedShape, firstTiffImage[1].shape) assert_equals(expectedShape, tiffImage.dims.count) assert_equals(239, firstTiffImage[1].ravel().max()) assert_equals(1, firstTiffImage[1].ravel().min())
def test_fromPng(self): imagePath = os.path.join(self.testResourcesDir, "singlelayer_png", "dot1_grey.png") pngImage = ImagesLoader(self.sc).fromPng(imagePath) firstPngImage = pngImage.first() assert_equals(0, firstPngImage[0], "Key error; expected first image key to be 0, was "+str(firstPngImage[0])) expectedShape = (70, 75) assert_true(isinstance(firstPngImage[1], ndarray), "Value type error; expected first image value to be numpy ndarray, was " + str(type(firstPngImage[1]))) assert_equals(expectedShape, firstPngImage[1].shape) assert_equals(expectedShape, pngImage.dims.count) assert_almost_equal(0.937, firstPngImage[1].ravel().max(), places=2) # integer val 239 assert_almost_equal(0.00392, firstPngImage[1].ravel().min(), places=2) # integer val 1
def test_fromTif(self): imagepath = os.path.join(self.testresourcesdir, "singlelayer_tif", "dot1_lzw.tif") tifimage = ImagesLoader(self.sc).fromTif(imagepath, self.sc) firsttifimage = tifimage.first() assert_equals(0, firsttifimage[0], "Key error; expected first image key to be 0, was "+str(firsttifimage[0])) expectedshape = (70, 75, 4) # 4 channel tif; RGBalpha assert_true(isinstance(firsttifimage[1], ndarray), "Value type error; expected first image value to be numpy ndarray, was " + str(type(firsttifimage[1]))) assert_equals(expectedshape, firsttifimage[1].shape) assert_equals(expectedshape, tifimage.dims.count) assert_equals(248, firsttifimage[1][:, :, 0].flatten().max()) assert_equals(8, firsttifimage[1][:, :, 0].flatten().min())
def test_fromPng(self): imagepath = os.path.join(self.testresourcesdir, "singlelayer_png", "dot1.png") pngimage = ImagesLoader(self.sc).fromPng(imagepath, self.sc) firstpngimage = pngimage.first() assert_equals(0, firstpngimage[0], "Key error; expected first image key to be 0, was "+str(firstpngimage[0])) expectedshape = (70, 75, 4) # 4 channel png; RGBalpha assert_true(isinstance(firstpngimage[1], ndarray), "Value type error; expected first image value to be numpy ndarray, was " + str(type(firstpngimage[1]))) assert_equals(expectedshape, firstpngimage[1].shape) assert_equals(expectedshape, pngimage.dims.count) assert_almost_equal(0.97, firstpngimage[1][:, :, 0].flatten().max(), places=2) assert_almost_equal(0.03, firstpngimage[1][:, :, 0].flatten().min(), places=2)
def roundTrip(images, dtype): outdir = os.path.join(self.outputdir, "binary-images-" + dtype) images.astype(dtype).saveAsBinaryImages(outdir) newimages = ImagesLoader(self.sc).fromStack(outdir, ext="bin") array_equal(images.first()[1], newimages.first()[1])
def roundTrip(images, dtype): outdir = os.path.join(self.outputdir, "binary-images-" + dtype) images.astype(dtype).saveAsBinaryImages(outdir) newimages = ImagesLoader(self.sc).fromStack(outdir, ext='bin') array_equal(images.first()[1], newimages.first()[1])