transform_affine: Apply affine transformation on an image keeping image center...
In torchvision: Models, Datasets and Transformations for Images

transform_affine

R Documentation

Apply affine transformation on an image keeping image center invariant

Description

Apply affine transformation on an image keeping image center invariant

Usage

transform_affine(
  img,
  angle,
  translate,
  scale,
  shear,
  resample = 0,
  fillcolor = NULL
)

Arguments

`img`	A `magick-image`, `array` or `torch_tensor`.
`angle`	(float or int): rotation angle value in degrees, counter-clockwise.
`translate`	(tuple, optional): tuple of maximum absolute fraction for horizontal and vertical translations. For example translate=(a, b), then horizontal shift is randomly sampled in the range -img_width * a < dx < img_width * a and vertical shift is randomly sampled in the range -img_height * b < dy < img_height * b. Will not translate by default.
`scale`	(tuple, optional): scaling factor interval, e.g (a, b), then scale is randomly sampled from the range a <= scale <= b. Will keep original scale by default.
`shear`	(sequence or float or int, optional): Range of degrees to select from. If shear is a number, a shear parallel to the x axis in the range (-shear, +shear) will be applied. Else if shear is a tuple or list of 2 values a shear parallel to the x axis in the range `⁠(shear[1], shear[2])⁠` will be applied. Else if shear is a tuple or list of 4 values, a x-axis shear in `⁠(shear[1], shear[2])⁠` and y-axis shear in `⁠(shear[3], shear[4])⁠` will be applied. Will not apply shear by default.
`resample`	(int, optional): An optional resampling filter. See interpolation modes.
`fillcolor`	(tuple or int): Optional fill color (Tuple for RGB Image and int for grayscale) for the area outside the transform in the output image (Pillow>=5.0.0). This option is not supported for Tensor input. Fill value for the area outside the transform in the output image is always 0.

Other transforms: transform_adjust_brightness(), transform_adjust_contrast(), transform_adjust_gamma(), transform_adjust_hue(), transform_adjust_saturation(), transform_center_crop(), transform_color_jitter(), transform_convert_image_dtype(), transform_crop(), transform_five_crop(), transform_grayscale(), transform_hflip(), transform_linear_transformation(), transform_normalize(), transform_pad(), transform_perspective(), transform_random_affine(), transform_random_apply(), transform_random_choice(), transform_random_crop(), transform_random_erasing(), transform_random_grayscale(), transform_random_horizontal_flip(), transform_random_order(), transform_random_perspective(), transform_random_resized_crop(), transform_random_rotation(), transform_random_vertical_flip(), transform_resize(), transform_resized_crop(), transform_rgb_to_grayscale(), transform_rotate(), transform_ten_crop(), transform_to_tensor(), transform_vflip()