How can I get heic image size without decoding image?

[eeyrw]

Build millions images meta information database is quite common in deep learning. Image size is a kind of important meta info for cleaning dataset, but decoding heif is quite time consuming. So how can I use the pillow_heif read image size but do not decoding image?

[bigcat88]

just read size property and do not read data property or anything that will lead to image decoding.

[eeyrw]

Something like this?

    heif_file = pillow_heif.open_heif(file, convert_hdr_to_8bit=False)
    print("Number of images:", len(heif_file))
    print("Information about each image:")
    for image in heif_file:
        print("\tSize:", image.size)

[bigcat88]

Yes, this will not decode the image, just take the size information from image header.