square_image_cropper

Description

This code generates such square images with the power of 2 size from images of various sizes.

Input

Output

Installation

Develop environment can be installed by:

make install_poetry
poetry install

Usage

Put image files under the directory written in cfg.yaml, then run:

make main

After the process is completed, square-sized images are output to the specified directory.

Configulation

If you want to change the calculation conditions, edit the parameters described in　./config/config.yaml. Each parameter is described below:

• path_to_image_directory:
  • Path to the directory where the input image is stored.
• target_extension:
  • Input image extension
• output_image_size:
  • Size of output image; must be a power of 2.
  • If output image size is larger than input image, then crop in smaller size and resize in larger size with bicubic interpolation.
• output_directory:
  • Path to the directory where the output image will be stored.
• output_extension:
  • Output image extension.

Motivations

When using images to create machine learning models, the training data is often required to be square images with a size power of two. However, most datasets or the images we took are not in such a format.

This code easily prepares such required images with a single command.