How to create a TIFF file with JPEG compression, JPEG2000 compression, or other compression methods in Python?

[ywxk-0]

Describe the question.

Hello, thank you for viewing this question. I need to create some TIFF files with JPEG or JPEG2000 compression. After learning about nvImageCodec, I tried to study it. However, I couldn't find suitable answers in the official documentation at https://docs.nvidia.com/cuda/nvimagecodec/samples/python_samples.html and https://docs.nvidia.com/cuda/nvimagecodec/py_api.html . Since I don't know how to write C or C++ code, I came here to ask. Thank you for your help.

Here is my Python code snippet:

import numpy as np
from nvidia import nvimgcodec



tif_file = r"HH_2.tiff"
# The image is 8-bit with 3 channels.

decodeparams = nvimgcodec.DecodeParams(allow_any_depth=True)

decoder = nvimgcodec.Decoder()

nv_img_0 = decoder.decode(tif_file, params=decodeparams)

img_0 = np.array(nv_img_0.cpu())


encoder = nvimgcodec.Encoder()

codec = 'tiff'
encode_params_0 = nvimgcodec.EncodeParams(quality_type=nvimgcodec.QualityType.LOSSLESS)

encoder.write("HH_nv.tiff", img_0, codec, params=encode_params_0)
# It outputs an uncompressed TIFF image.

encode_params_1 = nvimgcodec.EncodeParams(quality_value=1)

encoder.write("HH_LZW_nv.tiff", img_0, codec, params=encode_params_1)
# The output is a TIFF image compressed with LZW.

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