ComfyUI Node: Face Keypoints Preprocessor

Face Keypoints Preprocessor:

The FaceKeypointsPreprocessor node is designed to analyze images and extract facial keypoints, which are crucial for various AI art and image processing tasks. This node leverages advanced face analysis techniques to identify and mark key facial features, such as eyes, nose, and mouth, on the provided image. By doing so, it enables you to perform detailed facial analysis, which can be used for enhancing images, creating facial animations, or applying artistic effects. The primary goal of this node is to facilitate the extraction of facial keypoints in a seamless and efficient manner, ensuring that even if no face is detected, the process continues without causing interruptions.

Face Keypoints Preprocessor Input Parameters:

faceanalysis

This parameter expects a face analysis model, which is used to detect and analyze faces within the image. The model should be pre-loaded and prepared to perform facial keypoint extraction. The accuracy and performance of the keypoint extraction heavily depend on the quality and configuration of the face analysis model provided.

image

This parameter takes an image in which the facial keypoints need to be extracted. The image should be in a compatible format and resolution that the face analysis model can process effectively. The quality of the input image can significantly impact the accuracy of the keypoint extraction.

Face Keypoints Preprocessor Output Parameters:

IMAGE

The output is an image with the extracted facial keypoints. If the face analysis is successful, the keypoints will be marked on the image, highlighting the detected facial features. In cases where no face is detected, the output will be an image filled with zeros, indicating that no keypoints could be extracted.

Face Keypoints Preprocessor Usage Tips:

• Ensure that the face analysis model provided is well-trained and compatible with the type of images you are processing to achieve the best results.
• Use high-resolution images with clear facial features to improve the accuracy of the keypoint extraction.
• If you encounter issues with face detection, try adjusting the image size or quality to better suit the face analysis model's requirements.

Face Keypoints Preprocessor Common Errors and Solutions:

WARNING: no face detected, unable to extract the keypoints!

• Explanation: This warning indicates that the face analysis model was unable to detect any faces in the provided image, and therefore, no keypoints could be extracted.
• Solution: Ensure that the input image contains clear and visible faces. You may also try using a different face analysis model or adjusting the image resolution to improve detection accuracy.