imgdiff

ImageDiff

Bases: MetaAlgo

Calculate difference map

Builds a change map by calculating the difference between image 1 & image 2

Source code in changedet/algos/imgdiff.py

@AlgoCatalog.register("imgdiff")
class ImageDiff(MetaAlgo):
    """
    Calculate difference map

    Builds a change map by calculating the difference between image 1 & image 2
    """

    @classmethod
    def run(cls, im1: np.ndarray, im2: np.ndarray, **flags: Any) -> np.ndarray:
        """Run Image Differencing algorithm

        Args:
            im1 (np.ndarray): Image 1 array
            im2 (np.ndarray): Image 2 array
            **flags (dict): Flags for the algorithm
        """
        logger = flags["logger"]

        # Calculate difference map
        logger.info("Calculating difference map")
        diff = im1 - im2

        return diff

run(im1, im2, **flags) classmethod

Run Image Differencing algorithm

Parameters:

Name	Type	Description	Default
im1	ndarray	Image 1 array	required
im2	ndarray	Image 2 array	required
**flags	dict	Flags for the algorithm	{}

Source code in changedet/algos/imgdiff.py

@classmethod
def run(cls, im1: np.ndarray, im2: np.ndarray, **flags: Any) -> np.ndarray:
    """Run Image Differencing algorithm

    Args:
        im1 (np.ndarray): Image 1 array
        im2 (np.ndarray): Image 2 array
        **flags (dict): Flags for the algorithm
    """
    logger = flags["logger"]

    # Calculate difference map
    logger.info("Calculating difference map")
    diff = im1 - im2

    return diff