Image Enhancement Tool

Build an image enhancement tool that allows users to improve the visual quality of their images by adjusting brightness and contrast levels.

Requirements

The tool should:

• Load an image from a file path
• Accept brightness and contrast adjustment parameters
• Apply the brightness and contrast adjustments to the image
• Save the enhanced image to an output file path

The brightness parameter should support both positive values (to brighten) and negative values (to darken), with 0 meaning no change. The contrast parameter should also support positive and negative values, with 0 meaning no change.

@generates

API

def enhance_image(input_path: str, output_path: str, brightness: float = 0.0, contrast: float = 0.0) -> None:
    """
    Enhances an image by adjusting its brightness and contrast.

    Args:
        input_path: Path to the input image file
        output_path: Path where the enhanced image will be saved
        brightness: Brightness adjustment value (0 = no change, positive = brighter, negative = darker)
        contrast: Contrast adjustment value (0 = no change, positive = more contrast, negative = less contrast)
    """
    pass

Test Cases

• Loading a color image (RGB) and adjusting brightness to +50 makes the image visibly brighter @test
• Loading a color image and adjusting contrast to +30 increases the visual contrast @test
• Loading an image and adjusting both brightness to -20 and contrast to +15 applies both adjustments correctly @test
• Passing brightness value of 0 and contrast value of 0 results in an output image identical to the input @test

Dependencies { .dependencies }

imutils { .dependency }

Provides image processing convenience functions for adjusting brightness and contrast.

@satisfied-by