def _testContrast(self, x_np, y_np, contrast_factor):
for use_gpu in [True, False]:
with self.test_session(use_gpu=use_gpu):
x = constant_op.constant(x_np, shape=x_np.shape)
y = image_ops.adjust_contrast(x, contrast_factor)
y_tf = y.eval()
self.assertAllClose(y_tf, y_np, 1e-6)
def _testContrast(self, x_np, y_np, contrast_factor):
for use_gpu in [True, False]:
with self.test_session(use_gpu=use_gpu):
x = constant_op.constant(x_np, shape=x_np.shape)
y = image_ops.adjust_contrast(x, contrast_factor)
y_tf = y.eval()
self.assertAllClose(y_tf, y_np, 1e-6)
def _adjustContrastTf(self, x_np, contrast_factor):
with self.test_session():
x = array_ops.placeholder(np.float32)
with self.test_scope():
y = image_ops.adjust_contrast(x, contrast_factor)
y_tf = y.eval({x: x_np})
return y_tf
def _adjustContrastTf(self, x_np, contrast_factor):
with self.test_session():
x = array_ops.placeholder(np.float32)
with self.test_scope():
y = image_ops.adjust_contrast(x, contrast_factor)
y_tf = y.eval({x: x_np})
return y_tf
def _testContrast(self, x_np, y_np, contrast_factor):
with self.test_session():
x = array_ops.placeholder(x_np.dtype, shape=x_np.shape)
flt_x = image_ops.convert_image_dtype(x, dtypes.float32)
with self.test_scope():
y = image_ops.adjust_contrast(flt_x, contrast_factor)
y = image_ops.convert_image_dtype(y, x.dtype, saturate=True)
y_tf = y.eval({x: x_np})
self.assertAllClose(y_tf, y_np, 1e-6)
def _testContrast(self, x_np, y_np, contrast_factor):
with self.test_session():
x = array_ops.placeholder(x_np.dtype, shape=x_np.shape)
flt_x = image_ops.convert_image_dtype(x, dtypes.float32)
with self.test_scope():
y = image_ops.adjust_contrast(flt_x, contrast_factor)
y = image_ops.convert_image_dtype(y, x.dtype, saturate=True)
y_tf = y.eval({x: x_np})
self.assertAllClose(y_tf, y_np, 1e-6)
def _testContrast(self, x_np, y_np, contrast_factor, min_value, max_value):
for use_gpu in [True, False]:
with self.test_session(use_gpu=use_gpu):
x = constant_op.constant(x_np, shape=x_np.shape)
y = image_ops.adjust_contrast(x,
contrast_factor,
min_value=min_value,
max_value=max_value)
y_tf = y.eval()
self.assertAllEqual(y_tf, y_np)
def _testContrast(self, x_np, y_np, contrast_factor, min_value, max_value):
for use_gpu in [True, False]:
with self.test_session(use_gpu=use_gpu):
x = constant_op.constant(x_np, shape=x_np.shape)
y = image_ops.adjust_contrast(x,
contrast_factor,
min_value=min_value,
max_value=max_value)
y_tf = y.eval()
self.assertAllEqual(y_tf, y_np)
