mmcv.image.adjust_color¶
- mmcv.image.adjust_color(img, alpha=1, beta=None, gamma=0, backend=None)[source]¶
It blends the source image and its gray image:
\[output = img * alpha + gray\_img * beta + gamma\]- Parameters
img (ndarray) – The input source image.
alpha (int | float) – Weight for the source image. Default 1.
beta (int | float) – Weight for the converted gray image. If None, it’s assigned the value (1 - alpha).
gamma (int | float) – Scalar added to each sum. Same as
cv2.addWeighted(). Default 0.backend (str | None) – The image processing backend type. Options are cv2, pillow, None. If backend is None, the global
imread_backendspecified bymmcv.use_backend()will be used. Defaults to None.
- Returns
Colored image which has the same size and dtype as input.
- Return type
ndarray