Is segment mask missing a pixel?

[TSUKAMOTO-Kenji]

Why is the output mask missing one pixels on the left line and top line in bounding box?

[glenn-jocher]

@TSUKAMOTO-Kenji hello! The issue you're experiencing with the segment mask missing a pixel on the left and top lines of the bounding box might be due to how the mask is generated or rendered. This could be related to pixel indexing starting from zero, which is common in image processing libraries, or it could be a result of the specific interpolation or drawing methods used when creating the mask overlay.

If you believe this behavior is not intended or is affecting your results, please open an issue on the Ultralytics YOLOv8 repo with details about your observation, including the environment in which you're running the model, the dataset, and any relevant configurations. This will help us investigate and address the problem more effectively. Meanwhile, you can refer to our documentation for more information on segmentation tasks: https://docs.ultralytics.com/tasks/segment. Thank you for your contribution to improving YOLOv8! 🛠️🔍