ComfyUI Node: ImageScaleFactorSimple _O

ImageScaleFactorSimple _O:

The ImageScaleFactorSimple _O node is designed to upscale images by a specified factor, providing a straightforward and efficient way to enhance image resolution. This node allows you to choose from various upscaling methods and cropping options, making it versatile for different types of image processing tasks. The primary goal of this node is to increase the size of an image while maintaining or improving its quality, which is particularly useful for AI artists looking to refine their digital artwork or prepare images for high-resolution displays. By leveraging this node, you can achieve precise control over the scaling process, ensuring that the final output meets your specific requirements.

ImageScaleFactorSimple _O Input Parameters:

image

This parameter represents the input image that you want to upscale. It is the primary data that the node processes to produce a higher resolution version.

upscale_method

This parameter allows you to select the method used for upscaling the image. The available options are nearest-exact, bilinear, and area. Each method has its own characteristics: nearest-exact is fast and simple but may produce blocky results, bilinear offers smoother transitions by averaging pixel values, and area is suitable for downscaling but can also be used for upscaling with a focus on preserving the overall image area.

Factor

This parameter specifies the scaling factor by which the image dimensions will be multiplied. It accepts a floating-point value with a default of 1.25, a minimum of 0.0, and a maximum of 10.0, with increments of 0.28125. Adjusting this factor allows you to control the degree of upscaling applied to the image.

MulOf46

This toggle parameter determines whether the dimensions of the upscaled image should be enforced to be multiples of 4 or 6. The options are enabled and disabled, with enabled being the default. Enabling this option can help maintain compatibility with certain image processing pipelines that require specific dimension constraints.

crop

This parameter defines the cropping method applied to the image after upscaling. The available options are disabled and center. When set to disabled, no cropping is applied, and the entire upscaled image is retained. When set to center, the image is cropped to maintain the central portion, which can be useful for focusing on the main subject of the image.

ImageScaleFactorSimple _O Output Parameters:

IMAGE

The output of this node is the upscaled image. This parameter represents the final processed image with increased resolution based on the specified scaling factor and chosen upscaling method. The output image retains the visual characteristics of the input while providing enhanced detail and clarity.

ImageScaleFactorSimple _O Usage Tips:

• To achieve the best results, experiment with different upscale_method options to find the one that best suits your image type and desired outcome.
• Use the Factor parameter to fine-tune the level of upscaling. Smaller increments can help you achieve the perfect balance between image size and quality.
• If your workflow requires specific image dimensions, enable the MulOf46 toggle to ensure the upscaled image meets those requirements.
• When focusing on a particular area of the image, use the crop parameter set to center to maintain the central portion of the image after upscaling.

ImageScaleFactorSimple _O Common Errors and Solutions:

Invalid upscale method selected

• Explanation: The chosen upscale_method is not one of the available options.
• Solution: Ensure that the upscale_method parameter is set to one of the following: nearest-exact, bilinear, or area.

Factor value out of range

• Explanation: The Factor parameter is set to a value outside the allowed range (0.0 to 10.0).
• Solution: Adjust the Factor parameter to a value within the specified range, ensuring it is between 0.0 and 10.0.

Image dimensions not a multiple of 4 or 6

• Explanation: The MulOf46 toggle is enabled, but the resulting image dimensions are not multiples of 4 or 6.
• Solution: Verify that the input image dimensions and the scaling factor result in dimensions that are multiples of 4 or 6, or disable the MulOf46 toggle if this constraint is not required.