Custom Enhancer

Subclass ImageEnhancer to create an operation that modifies detect_mat.

from phenotypic.abc_ import ImageEnhancer
import numpy as np

class LogTransform(ImageEnhancer):
    """Apply a log transform to compress the dynamic range of detect_mat."""

    def __init__(self, c: float = 1.0):
        self.c = c

    def _operate(self, image):
        mat = image.detect_mat[:]
        image.detect_mat[:] = self.c * np.log1p(mat)
        return image

Contract

• Read from and write to detect_mat

• Do not modify rgb, gray, objmask, or objmap

• Return the modified image