ComfyUI Node: Create HDR image

Create HDR image:

The HDRCreate node is designed to generate High Dynamic Range (HDR) images by combining multiple exposures of the same scene. This process enhances the dynamic range of the image, capturing details in both the shadows and highlights that would be lost in a single exposure. By merging three images taken at different exposure levels, HDRCreate allows you to create a more realistic and detailed representation of the scene. This node is particularly useful for AI artists looking to enhance the visual quality of their images, making them more vibrant and true-to-life.

Create HDR image Input Parameters:

image_a

This parameter represents the first image to be used in the HDR creation process. It should be an image taken at a specific exposure level. The quality and details captured in this image will contribute to the final HDR image.

image_b

This parameter represents the second image to be used in the HDR creation process. It should be an image taken at a different exposure level than image_a. The combination of details from this image and the others will enhance the dynamic range of the final HDR image.

image_c

This parameter represents the third image to be used in the HDR creation process. It should be an image taken at yet another different exposure level. The details captured in this image will further contribute to the dynamic range and overall quality of the final HDR image.

exposure_a

This parameter sets the exposure value for image_a. It is a floating-point number with a default value of 1.0, a minimum value of 0.001, and a maximum value of 1024.0. Adjusting this value will affect how the details from image_a are integrated into the final HDR image.

exposure_b

This parameter sets the exposure value for image_b. It is a floating-point number with a default value of 2.5, a minimum value of 0.001, and a maximum value of 1024.0. Adjusting this value will affect how the details from image_b are integrated into the final HDR image.

exposure_c

This parameter sets the exposure value for image_c. It is a floating-point number with a default value of 8.0, a minimum value of 0.001, and a maximum value of 1024.0. Adjusting this value will affect how the details from image_c are integrated into the final HDR image.

Create HDR image Output Parameters:

IMAGE

The output of the HDRCreate node is an HDR image that combines the details from the three input images taken at different exposure levels. This image will have an enhanced dynamic range, capturing details in both the shadows and highlights, resulting in a more realistic and detailed representation of the scene.

Create HDR image Usage Tips:

• Ensure that the input images (image_a, image_b, and image_c) are taken at different exposure levels to maximize the dynamic range of the final HDR image.
• Adjust the exposure values (exposure_a, exposure_b, and exposure_c) to fine-tune the contribution of each image to the final HDR result.
• Use high-quality images with minimal noise to achieve the best results in the HDR creation process.

Create HDR image Common Errors and Solutions:

Batch size mismatch!

• Explanation: This error occurs when the input images have different batch sizes, meaning they do not have the same dimensions or number of images in the batch.
• Solution: Ensure that all input images (image_a, image_b, and image_c) have the same dimensions and batch size before using them in the HDRCreate node.

Failed to read image!

• Explanation: This error occurs when the node is unable to read one of the input images, possibly due to an incorrect file path or unsupported file format.
• Solution: Verify that the file paths for the input images are correct and that the images are in a supported format (e.g., PNG, JPEG).