GaussianInverserendering/136-159

Object Folder Compression Scripts

This directory contains scripts to compress and decompress all object folders in the Objaverse dataset.

Directory Structure

The dataset is organized as follows:

imgs/
├── 000-136/           # Scene directory
│   ├── <object_id>/   # Object folder containing images and data
│   │   ├── albedo_*.png
│   │   ├── color_*.png
│   │   ├── depth_*.exr
│   │   ├── normal_*.png
│   │   ├── orm_*.png
│   │   ├── object.ply
│   │   ├── camera.json
│   │   └── lighting.json
│   └── ...
├── 000-137/           # Another scene directory
└── ...

Scripts

zip_all_objects.sh

Compresses all object folders into individual .zip files with maximum compression.

Usage:

./zip_all_objects.sh

What it does:

• Iterates through all scene directories (000-136, 000-137, etc.)
• For each object folder within a scene, creates a compressed .zip file
• Uses maximum compression (-9) to minimize file sizes
• Skips objects that are already zipped
• Provides progress tracking and logging

Output:

• Each object folder gets compressed into <object_id>.zip
• Zip files are created in the same directory as the original object folder
• Progress is displayed during execution

unzip_all_objects.sh

Decompresses all .zip files back to their original folder structure.

Usage:

./unzip_all_objects.sh

What it does:

• Iterates through all scene directories
• Extracts all .zip files back to their original object folders
• Skips extraction if the folder already exists
• Maintains the original directory structure
• Provides progress tracking and logging

Example

Before compression:

000-136/
├── 62a4c16ac8084bf88aef8daba8f15249/
│   ├── albedo_00.png
│   ├── color_0_00.png
│   └── ...
└── 62a8be2e2d1b4e5c878304fc63cf3de6/
    ├── albedo_00.png
    └── ...

After compression:

000-136/
├── 62a4c16ac8084bf88aef8daba8f15249/     # Original folder (can be deleted after zipping)
├── 62a4c16ac8084bf88aef8daba8f15249.zip  # Compressed archive
├── 62a8be2e2d1b4e5c878304fc63cf3de6/
└── 62a8be2e2d1b4e5c878304fc63cf3de6.zip

Notes

• The compression typically achieves significant space savings
• Each object folder contains ~250+ files (images, depth maps, etc.)
• The scripts are designed to be resumable - they skip already processed items
• Progress is logged to help track completion on large datasets
• Both scripts provide detailed progress information and error handling