pytorch/examples

No saved *.png in checkpoint in dcgan.cpp

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#742 opened on Mar 24, 2020

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bughelp wanted

Description

In the README file of "DCGAN Example with the PyTorch C++ Frontend" it says that:

The training script periodically generates image samples. Use the display_samples.py script situated in this folder to generate a plot image. For example:

But the dcgan.cpp file just saves the model in *.pt format, doesnt save any picture. Then, the command stated in the README:

$ python display_samples.py -i dcgan-sample-10.png
Saved out.png

Gives an error as dcgan-sample-10.png doesnt exist

Contributor guide

Tech stack
cpppython
Domain
machine learning
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
C++ basicsPyTorch C++ API basics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70
Research direction
The issue is in the dcgan.cpp file within the pytorch/examples repository. The README states that sample images are periodically saved as PNG, but the C++ code only saves model checkpoints. To fix, one must add image saving logic to dcgan.cpp, possibly using stb image write or a similar library. The display samples.py script expects PNG files; ensure the generated images are saved in the correct format and location.