# Determining JPEG Image Standard Quality Factor from the Quantization Tables

arXiv: https://arxiv.org/abs/1802.00992 · HTML: https://mlsanity.com/paper/1802.00992/

## Key facts

- Cited by 1 papers in the map (data through 14 Oct 2026).
- First posted on arXiv 3 Feb 2018.

## Built on by (most cited first, 1 of 1)

- [Functional Neural Networks for Parametric Image Restoration Problems](https://mlsanity.com/paper/2111.00361/) (2021)

## Abstract (arXiv)

Identifying the quality factor of JPEG images is very useful for applications in digital image forensics. Though several command-line tools exist and are used in widely used software such as GIMP (GNU Image Manipulation Program), the well-known image editing software, or the ImageMagick suite, we have found that those may provide inaccurate or even wrong results. This paper presents a simple method for determining the exact quality factor of a JPEG image from its quantization tables. The method is presented briefly and a sample program, written in Unix/Linux Shell bash language is provided.