Image Format Size Comparison

This project provides a Python script to visualize the impact of image resizing on file size across various image formats including JPEG, PNG, and BMP. The script generates individual graphs for each format and a comparison graph for all formats. The graphs are saved as PNG files in the data/graphs directory.

Installation

Before running the script, make sure required Python packages installed. Install them with pip:

pip install opencv-python matplotlib

Usage

The script takes the path of an image file ('data/RPi.png' by default) and an output folder (data/graphs) as arguments. It resizes the image to various percentages of the original size, saves the resized images in the specified formats, and generates graphs of the file sizes. Simply running main.py will resize the image to percentages ranging from 10% to 100% of the original size, save the resized images in JPEG, PNG, and BMP formats in the output folder, and generate the graphs in a "graphs" subfolder within the output folder.

You can customize the formats and resize percentages by modifying the formats and resize_percents parameters in the resize_and_save_image function.

Default input image:

Example output comparison graph using default image: