`denoise_cnn` causes error

[uhkeller]

I'm on macOS 15.7.2, M1 Pro, G'MIC CLI installed using Homebrew.

❯ gmic 512,512,1,1 noise 20 denoise_cnn
[gmic]./ Start G'MIC interpreter (v.3.6.3).
[gmic]./ Input black image at position 0 (1 image 512x512x1x1).
[gmic]./ Add gaussian noise to image [0], with standard deviation 20.
[gmic]./ Denoise image [0] using a convolutional neural network, with automatic noise level estimation and patch size 64.
[gmic] *** Error in ./denoise_cnn/*local/run/__run/nn_conv2d/ *** Command 'nn_conv2d': Invalid argument 'C0_CONV2,.,48,3,1,1,0,1,1,0,4'.
[gmic] Command 'nn_conv2d' has the following description:

  nn_conv2d:
      out,in,nb_channels>0,_kernel_size>0,_stride>0,_dilation,_shrink>=0,
        _boundary_conditions,_learning_mode,_weight_decay>=0,_initialization

    Add a 'conv2d' layer (2D convolutional layer) to the current network.
    'boundary_conditions' can be { 0:Dirichlet | 1:Neumann | 2:Periodic |
    3:Mirror }.
    'learning_mode' can be { 0:No learning | 1:Weights only | 2:Biases
    only | 3:Weights+biases }.
    'initialization' can be { 0:Zero | 1:identity | 2:Lecun-initialization
    | 3:He-initialization }.

    Default values: 'kernel_size=3', 'stride=1', 'dilation=1', 'shrink=0',
     'boundary_conditions=1', 'learning_mode=3', 'weight_decay=0' and
     'initialization=3'.
❯ stat ~/.cache/gmic/gmic_denoise_cnn.gmz
16777231 209268007 -rw-r--r-- 1 myuser (1429829944 0 796751 "Nov 15 10:55:23 2025" "Nov 15 10:55:23 2025" "Nov 15 10:55:23 2025" "Nov 15 10:55:23 2025" 4096 1560 0 /Users/mysuser/.cache/gmic/gmic_denoise_cnn.gmz

[dtschump]

Suggestion :

1. $ gmic update, to retrieve the latest version of the G'MIC stdlib (which includes the neural network library).
2. Locate and delete the local version of the denoising network on your drive :

$ gmic input_cached gmic_denoise_cnn.gmz delete '${}' q
[gmic]./ Start G'MIC interpreter (v.3.6.4).
[gmic]./ Input cached file 'gmic_denoise_cnn.gmz'.
[gmic]./ Delete file '/home/tschumperle/.cache/gmic/gmic_denoise_cnn.gmz' (1 file).
[gmic]./ Quit G'MIC interpreter.

3. Try the denoise_cnn command again (it should try to re-download the newest network file from the G'MIC server):

$ gmic sp colorful,256 +noise. 20 c. 0,255 +denoise_cnn. 20
[gmic]./ Start G'MIC interpreter (v.3.6.4).
[gmic]./ Input sample image 'colorful' (1 image 256x256x1x3).
[gmic]./ Add gaussian noise to image [0], with standard deviation 20.
[gmic]./ Cut image [1] in range [0,255].
[gmic]./ Denoise image [1] using a convolutional neural network, with noise level 20 and patch size 64.
[gmic]./ Display images [0,1,2] = 'colorful, colorful_c1, [unnamed]_c1'.

Let me know if that helps.

[uhkeller]

It did! Thanks you very much.