ComfyUI Node: ✨ High-Pass Filter + Blend

✨ High-Pass Filter + Blend:

The ArchAi3D_HighPass_Blend node is designed to enhance images by preserving and transferring fine details from an original image to a processed or relighted image. This node utilizes a high-pass filtering technique to extract high-frequency details from the original image, which are then blended into the relighted image. This process ensures that the fine textures and details are maintained even after the image has undergone lighting or color adjustments. The node is particularly useful for restoring details that may have been lost during image processing, such as relighting or color correction, and for transferring texture details to enhance the visual quality of processed images. By using different blend modes and adjusting parameters like blur radius and strength, you can achieve a variety of effects, from subtle detail enhancement to more pronounced texture transfers.

✨ High-Pass Filter + Blend Input Parameters:

original

The original parameter is an image input that serves as the source from which high-frequency details are extracted. This image should contain the fine textures and details you wish to preserve and transfer to the processed image. The quality and resolution of this image directly impact the effectiveness of the detail transfer process.

relighted

The relighted parameter is an image input that represents the processed or relighted version of the original image. This is the target image to which the extracted details from the original image will be applied. The relighted image should be the one that has undergone lighting or color adjustments and requires detail enhancement.

radius

The radius parameter is a float input that determines the blur radius used in the high-pass filter. It controls the size of the details extracted from the original image, with a higher radius capturing larger details. The parameter ranges from 0.5 to 20.0, with a default value of 3.0. Adjusting this value allows you to fine-tune the level of detail extracted, depending on the specific requirements of your image enhancement task.

strength

The strength parameter is a float input that specifies the intensity of the detail blending process. It ranges from 0.0 to 3.0, with a default value of 1.0. A strength of 0 results in no effect, while a value of 1 applies a normal level of detail transfer. Values greater than 1 increase the intensity of the detail blending, allowing for more pronounced texture enhancements.

blend_mode

The blend_mode parameter is a combo input that allows you to select the method used to combine the detail layer with the relighted image. Available options include "linear," "overlay," "soft_light," and "vivid_light," with "linear" as the default mode. Each blend mode offers a different visual effect, enabling you to achieve the desired look for your enhanced image.

✨ High-Pass Filter + Blend Output Parameters:

result

The result output is the final image that combines the relighted image with the high-frequency details extracted from the original image. This output preserves the fine textures and details while maintaining the new lighting or color adjustments applied to the relighted image. It is the primary output that reflects the node's enhancement capabilities.

high_freq_vis

The high_freq_vis output is a visualization of the high-frequency details extracted from the original image. This output is normalized for better visualization, allowing you to see the range and intensity of the details that have been transferred to the relighted image. It serves as a useful tool for understanding the impact of the high-pass filtering process.

✨ High-Pass Filter + Blend Usage Tips:

• To achieve subtle detail enhancement, start with a lower strength value and gradually increase it until you reach the desired effect.
• Experiment with different blend_mode options to find the one that best suits your image enhancement goals, as each mode offers a unique visual outcome.
• Use a smaller radius value for images with fine textures and a larger value for images with more prominent details to optimize the detail extraction process.

✨ High-Pass Filter + Blend Common Errors and Solutions:

Image Dimension Mismatch

• Explanation: This error occurs when the dimensions of the original and relighted images do not match.
• Solution: Ensure that both input images have the same dimensions before processing them with the node.

Invalid Blend Mode

• Explanation: This error arises when an unsupported blend mode is selected.
• Solution: Verify that the blend_mode parameter is set to one of the supported options: "linear," "overlay," "soft_light," or "vivid_light."

Strength Out of Range

• Explanation: This error occurs when the strength value is set outside the allowed range of 0.0 to 3.0.
• Solution: Adjust the strength parameter to fall within the specified range to ensure proper functionality.