ComfyUI Node: Halation Bloom

Halation Bloom:

The HalationBloom node is designed to enhance your images by applying a combination of halation and bloom effects, which are popular in photography and cinematography for creating a dreamy, ethereal look. Halation refers to the spreading of light beyond its boundaries, often creating a glow around bright areas, while bloom enhances the brightness and softness of these areas. This node allows you to apply these effects individually or together, providing flexibility in achieving the desired visual impact. By adjusting parameters such as intensity, radius, and threshold, you can control the extent and style of the effects, making it a powerful tool for artists looking to add a cinematic touch to their images. Additionally, the node includes options for chromatic aberration and temporal variation, further enhancing the creative possibilities.

Halation Bloom Input Parameters:

images

This parameter accepts a batch of images that you want to process. The images are the primary input on which the halation and bloom effects will be applied.

effect_mode

This parameter determines which effect to apply: "Halation", "Bloom", or "Both". Choosing "Halation" applies only the halation effect, "Bloom" applies only the bloom effect, and "Both" applies both effects simultaneously.

intensity

This parameter controls the strength of the effects applied to the image. It ranges from 0.0 to 5.0, with a default value of 1.0. A higher intensity will result in more pronounced effects.

threshold

This parameter sets the brightness level above which the effects will be applied. It ranges from 0.0 to 1.0, with a default value of 0.6. Lowering the threshold will cause more areas of the image to be affected by the effects.

radius

This parameter defines the size of the area around bright spots that will be affected by the effects. It ranges from 1 to 100, with a default value of 15. A larger radius will create a more extensive glow or bloom around bright areas.

chromatic_aberration

This parameter adds a color fringing effect to the image, simulating the dispersion of light. It ranges from 0.0 to 2.0, with a default value of 0.5. Increasing this value will enhance the color separation effect.

temporal_variation

This parameter introduces a temporal variation to the intensity of the effects, creating a dynamic, fluctuating look. It ranges from 0.0 to 1.0, with a default value of 0.2. Higher values will result in more noticeable variations over time.

red_offset

This parameter adjusts the intensity of the red channel in the halation effect, allowing for color customization. It ranges from 0.5 to 2.0, with a default value of 1.2. Increasing this value will enhance the red glow in the halation effect.

Halation Bloom Output Parameters:

IMAGE

The output is a batch of images with the applied halation and/or bloom effects. These processed images will have enhanced visual characteristics, such as glowing highlights and softened bright areas, depending on the input parameters. The output maintains the same format as the input images, ensuring compatibility with subsequent processing steps.

Halation Bloom Usage Tips:

• Experiment with the intensity and radius parameters to achieve the desired level of glow and softness in your images. A higher intensity combined with a larger radius can create a more dramatic effect.
• Use the threshold parameter to control which areas of the image are affected by the effects. Lowering the threshold can help include more subtle highlights in the effect.
• If you want to add a dynamic feel to your images, try adjusting the temporal_variation parameter to introduce fluctuations in the effect intensity over time.

Halation Bloom Common Errors and Solutions:

"Invalid image format"

• Explanation: This error occurs when the input images are not in the expected format or data type.
• Solution: Ensure that the input images are correctly formatted as torch tensors and are compatible with the node's processing requirements.

"Effect mode not recognized"

• Explanation: This error happens when an invalid option is provided for the effect_mode parameter.
• Solution: Verify that the effect_mode parameter is set to one of the valid options: "Halation", "Bloom", or "Both".

"Parameter out of range"

• Explanation: This error indicates that one or more input parameters are set outside their allowed range.
• Solution: Check the values of all input parameters and ensure they fall within the specified minimum and maximum limits.