ComfyUI Node: Crop Image

Crop Image:

The ETN_CropImage node is designed to allow you to crop a specific region from an image. This can be particularly useful when you need to focus on a particular part of an image, remove unwanted sections, or prepare images for further processing. By specifying the coordinates and dimensions of the desired crop area, you can extract the exact portion of the image you need. This node is essential for tasks that require precise image manipulation, such as creating thumbnails, isolating objects, or preparing images for machine learning models. The cropping operation is straightforward and efficient, ensuring that you can quickly and easily obtain the desired image segment.

Crop Image Input Parameters:

image

This parameter represents the input image that you want to crop. The image should be in a format that the node can process, typically a multi-dimensional array representing the pixel data.

x

This parameter specifies the x-coordinate of the top-left corner of the crop area. It determines the horizontal starting point of the crop. The value must be an integer between 0 and 8192, with a default value of 0. Adjusting this value allows you to shift the crop area horizontally within the image.

y

This parameter specifies the y-coordinate of the top-left corner of the crop area. It determines the vertical starting point of the crop. The value must be an integer between 0 and 8192, with a default value of 0. Adjusting this value allows you to shift the crop area vertically within the image.

width

This parameter defines the width of the crop area. It determines how many pixels wide the cropped image will be. The value must be an integer between 1 and 8192, with a default value of 512. Adjusting this value allows you to control the horizontal size of the cropped image.

height

This parameter defines the height of the crop area. It determines how many pixels tall the cropped image will be. The value must be an integer between 1 and 8192, with a default value of 512. Adjusting this value allows you to control the vertical size of the cropped image.

Crop Image Output Parameters:

IMAGE

The output of this node is the cropped image, which is a segment of the original image defined by the specified coordinates and dimensions. This cropped image retains the same format as the input image and can be used for further processing or analysis.

Crop Image Usage Tips:

• Ensure that the x and y coordinates, along with the width and height, define a crop area that lies within the bounds of the original image to avoid errors.
• Use the default values for width and height if you are unsure of the exact dimensions needed, and adjust them incrementally to achieve the desired crop.
• This node can be used in conjunction with other image processing nodes to create a pipeline for complex image manipulation tasks.

Crop Image Common Errors and Solutions:

"IndexError: index out of bounds"

• Explanation: This error occurs when the specified crop area extends beyond the boundaries of the input image.
• Solution: Ensure that the x and y coordinates, along with the width and height, define a crop area that is entirely within the bounds of the original image.

"TypeError: unsupported image format"

• Explanation: This error occurs when the input image is in a format that the node cannot process.
• Solution: Convert the input image to a supported format, typically a multi-dimensional array representing the pixel data, before passing it to the node.