ComfyUI Node: Image High Pass Filter

Image High Pass Filter:

The Image High Pass Filter node is designed to enhance the details and edges in an image by emphasizing high-frequency components. This filter works by subtracting a blurred version of the image from the original image, which effectively isolates the fine details and edges. The resulting image can be used to highlight textures and intricate patterns, making it a valuable tool for AI artists looking to add depth and detail to their creations. The node offers options to control the radius of the blur, the strength of the effect, and whether the output should be in color or grayscale. Additionally, it provides an option to use a neutral background, which can help in blending the high-pass filtered image with other layers seamlessly.

Image High Pass Filter Input Parameters:

radius

The radius parameter controls the radius of the Gaussian blur applied to the image. A larger radius will result in a more pronounced blur, which in turn affects the level of detail that is isolated by the high-pass filter. The default value is 10, and it can be adjusted to achieve the desired level of detail enhancement.

strength

The strength parameter determines the intensity of the high-pass filter effect. A higher strength value will amplify the details and edges more strongly, making them more prominent in the final image. The default value is 1.5, and it can be adjusted to fine-tune the effect.

color_output

The color_output parameter specifies whether the output image should be in color or grayscale. If set to "true", the output will be in color; if set to "false", the output will be in grayscale. This option allows you to choose the type of output that best suits your artistic needs.

neutral_background

The neutral_background parameter determines whether a neutral background should be used in the output image. If set to "true", a neutral background (gray for color images and mid-gray for grayscale images) will be used, which can help in blending the high-pass filtered image with other layers. If set to "false", the original background will be retained.

Image High Pass Filter Output Parameters:

IMAGE

The output of the Image High Pass Filter node is an image with enhanced details and edges. This high-pass filtered image can be used to add depth and texture to your artwork, making fine details more prominent and visually appealing.

Image High Pass Filter Usage Tips:

• Experiment with different radius values to find the optimal level of detail enhancement for your specific image.
• Adjust the strength parameter to control the intensity of the high-pass filter effect. Higher values will make details more pronounced.
• Use the color_output option to switch between color and grayscale outputs, depending on the desired artistic effect.
• Enable the neutral_background option to facilitate seamless blending with other layers in your composition.

Image High Pass Filter Common Errors and Solutions:

Image appears too sharp or too soft

• Explanation: The radius or strength parameters may not be set optimally.
• Solution: Adjust the radius and strength parameters to achieve the desired level of detail enhancement.

Output image is not in the desired color mode

• Explanation: The color_output parameter may be set incorrectly.
• Solution: Check the color_output parameter and set it to "true" for color output or "false" for grayscale output.

Blending issues with other layers

• Explanation: The neutral_background parameter may not be set correctly.
• Solution: Enable the neutral_background option to use a neutral background, which can help in blending the high-pass filtered image with other layers.