本文整理汇总了Python中torchvision.transforms.functional.center_crop方法的典型用法代码示例。如果您正苦于以下问题：Python functional.center_crop方法的具体用法？Python functional.center_crop怎么用？Python functional.center_crop使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类torchvision.transforms.functional的用法示例。
在下文中一共展示了functional.center_crop方法的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: __call__
# 需要导入模块: from torchvision.transforms import functional [as 别名]
# 或者: from torchvision.transforms.functional import center_crop [as 别名]
def __call__(self, sample):
rdict = {}
input_data = sample['input']
w, h = input_data.size
th, tw = self.size
fh = int(round((h - th) / 2.))
fw = int(round((w - tw) / 2.))
params = (fh, fw, w, h)
self.propagate_params(sample, params)
input_data = F.center_crop(input_data, self.size)
rdict['input'] = input_data
if self.labeled:
gt_data = sample['gt']
gt_metadata = sample['gt_metadata']
gt_data = F.center_crop(gt_data, self.size)
gt_metadata["__centercrop"] = (fh, fw, w, h)
rdict['gt'] = gt_data
sample.update(rdict)
return sample 示例2: cv_transform
# 需要导入模块: from torchvision.transforms import functional [as 别名]
# 或者: from torchvision.transforms.functional import center_crop [as 别名]
def cv_transform(img):
# img = resize(img, size=(100, 300))
# img = to_tensor(img)
# img = normalize(img, mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225])
# img = pad(img, padding=(10, 10, 20, 20), fill=(255, 255, 255), padding_mode='constant')
# img = pad(img, padding=(100, 100, 100, 100), fill=5, padding_mode='symmetric')
# img = crop(img, -40, -20, 1000, 1000)
# img = center_crop(img, (310, 300))
# img = resized_crop(img, -10.3, -20, 330, 220, (500, 500))
# img = hflip(img)
# img = vflip(img)
# tl, tr, bl, br, center = five_crop(img, 100)
# img = adjust_brightness(img, 2.1)
# img = adjust_contrast(img, 1.5)
# img = adjust_saturation(img, 2.3)
# img = adjust_hue(img, 0.5)
# img = adjust_gamma(img, gamma=3, gain=0.1)
# img = rotate(img, 10, resample='BILINEAR', expand=True, center=None)
# img = to_grayscale(img, 3)
# img = affine(img, 10, (0, 0), 1, 0, resample='BICUBIC', fillcolor=(255,255,0))
# img = gaussion_noise(img)
# img = poisson_noise(img)
img = salt_and_pepper(img)
return to_tensor(img) 示例3: pil_transform
# 需要导入模块: from torchvision.transforms import functional [as 别名]
# 或者: from torchvision.transforms.functional import center_crop [as 别名]
def pil_transform(img):
# img = functional.resize(img, size=(100, 300))
# img = functional.to_tensor(img)
# img = functional.normalize(img, mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225])
# img = functional.pad(img, padding=(10, 10, 20, 20), fill=(255, 255, 255), padding_mode='constant')
# img = functional.pad(img, padding=(100, 100, 100, 100), padding_mode='symmetric')
# img = functional.crop(img, -40, -20, 1000, 1000)
# img = functional.center_crop(img, (310, 300))
# img = functional.resized_crop(img, -10.3, -20, 330, 220, (500, 500))
# img = functional.hflip(img)
# img = functional.vflip(img)
# tl, tr, bl, br, center = functional.five_crop(img, 100)
# img = functional.adjust_brightness(img, 2.1)
# img = functional.adjust_contrast(img, 1.5)
# img = functional.adjust_saturation(img, 2.3)
# img = functional.adjust_hue(img, 0.5)
# img = functional.adjust_gamma(img, gamma=3, gain=0.1)
# img = functional.rotate(img, 10, resample=PIL.Image.BILINEAR, expand=True, center=None)
# img = functional.to_grayscale(img, 3)
# img = functional.affine(img, 10, (0, 0), 1, 0, resample=PIL.Image.BICUBIC, fillcolor=(255,255,0))
return functional.to_tensor(img) 示例4: __call__
# 需要导入模块: from torchvision.transforms import functional [as 别名]
# 或者: from torchvision.transforms.functional import center_crop [as 别名]
def __call__(self, img_dict):
keys = ['rgb', 'ir', 'depth']
for k in keys:
img = img_dict[k]
w, h = img.size
crop_h, crop_w = self.size
if crop_w > w or crop_h > h:
raise ValueError("Requested crop size {} is bigger than input size {}".format(self.size,
(h, w)))
if self.crop_index == 0:
img_dict[k] = F.center_crop(img, (crop_h, crop_w))
elif self.crop_index == 1:
img_dict[k] = img.crop((0, 0, crop_w, crop_h))
elif self.crop_index == 2:
img_dict[k] = img.crop((w - crop_w, 0, w, crop_h))
elif self.crop_index == 3:
img_dict[k] = img.crop((0, h - crop_h, crop_w, h))
elif self.crop_index == 4:
img_dict[k] = img.crop((w - crop_w, h - crop_h, w, h))
else:
raise ValueError("Requested crop index is not in range(5)")
return img_dict 示例5: __call__
# 需要导入模块: from torchvision.transforms import functional [as 别名]
# 或者: from torchvision.transforms.functional import center_crop [as 别名]
def __call__(self, img1, img2):
img1 = tvF.resize(img1, self.size, interpolation=Image.LANCZOS)
img2 = tvF.resize(img2, self.size, interpolation=Image.LANCZOS)
if random.random() < 0.5:
img1 = tvF.hflip(img1)
img2 = tvF.hflip(img2)
if random.random() < 0.5:
rot = random.uniform(-10, 10)
crop_ratio = rot_crop(rot)
img1 = tvF.rotate(img1, rot, resample=Image.BILINEAR)
img2 = tvF.rotate(img2, rot, resample=Image.BILINEAR)
img1 = tvF.center_crop(img1, int(img1.size[0] * crop_ratio))
img2 = tvF.center_crop(img2, int(img2.size[0] * crop_ratio))
i, j, h, w = self.get_params(img1, self.scale, self.ratio)
# return the image with the same transformation
return (tvF.resized_crop(img1, i, j, h, w, self.size, self.interpolation),
tvF.resized_crop(img2, i, j, h, w, self.size, self.interpolation))