Artifact in rendering video

[ItsThanhTung]

I use run.py to generate novel views. However, the results look a bit weird with artifacts in the images. I tried with other samples from the GSO dataset and even with the hamburger and chair images in this repo, but the issue persists.

Do you have any hypotheses about this behavior?

We only modify image processing to use the alpha channels in RGBA image.

for i, image_path in enumerate(args.image):
    if args.no_remove_bg:
        image = np.array(Image.open(image_path))
        image = image / 255.0
        image = image[:, :, :3] * image[:, :, 3:4] + (1 - image[:, :, 3:4]) * 1.0
        image = Image.fromarray((image * 255.0).astype(np.uint8))

        if not os.path.exists(os.path.join(output_dir, str(i))):
            os.makedirs(os.path.join(output_dir, str(i)))

        image.save(os.path.join(output_dir, str(i), f"input.png"))

    images.append(image)

timer.end("Processing images")