ComfyUI Node: Glow

Glow:

The Glow node is designed to add a glowing effect to your images, enhancing their visual appeal by creating a soft, luminous aura around bright areas. This effect is achieved by applying a Gaussian blur to the image and then blending the blurred image back with the original, controlled by an intensity parameter. The Glow node is particularly useful for creating dreamy, ethereal visuals or emphasizing highlights in your artwork. By adjusting the intensity and blur radius, you can fine-tune the glow effect to suit your artistic vision, making it a versatile tool in your post-processing arsenal.

Glow Input Parameters:

image

This parameter represents the input image to which the glow effect will be applied. It should be a tensor representing the image data.

intensity

The intensity parameter controls the strength of the glow effect. A higher intensity value will result in a more pronounced glow, while a lower value will produce a subtler effect. The intensity can be adjusted within the range of 0.0 to 5.0, with a default value of 1.0. This allows you to fine-tune the glow to achieve the desired visual impact.

blur_radius

The blur_radius parameter determines the radius of the Gaussian blur applied to the image. A larger radius will create a more diffuse glow, while a smaller radius will produce a sharper, more focused glow. The blur radius can be set between 1 and 50, with a default value of 5. This parameter is crucial for controlling the spread and softness of the glow effect.

Glow Output Parameters:

IMAGE

The output is the processed image with the glow effect applied. This tensor represents the final image data, where the original image has been blended with a blurred version to create the glowing effect. The output image will have the same dimensions as the input image but with the added glow effect, enhancing its visual appeal.

Glow Usage Tips:

• To achieve a subtle glow effect, start with a low intensity value (e.g., 0.5) and a small blur radius (e.g., 3), then gradually increase these parameters until you reach the desired effect.
• For a more dramatic and dreamy look, use higher intensity values (e.g., 2.0 or above) and larger blur radii (e.g., 20 or more).
• Experiment with different combinations of intensity and blur radius to find the perfect balance for your specific image and artistic style.

Glow Common Errors and Solutions:

Image tensor shape mismatch

• Explanation: The input image tensor does not have the expected shape (batch_size, height, width, channels).
• Solution: Ensure that your input image tensor is correctly shaped as (batch_size, height, width, channels) before passing it to the Glow node.

Intensity value out of range

• Explanation: The intensity value provided is outside the allowed range of 0.0 to 5.0.
• Solution: Adjust the intensity value to be within the specified range (0.0 to 5.0).

Blur radius value out of range

• Explanation: The blur radius value provided is outside the allowed range of 1 to 50.
• Solution: Adjust the blur radius value to be within the specified range (1 to 50).