# Performance Evaluation of Two-layer lossless HDR Coding using Histogram Packing Technique under Various Tone-mapping Operators

## TL;DR

This paper evaluates a lossless HDR coding method using histogram packing, comparing its performance with JPEG XT across various tone-mapping operators to understand their differences.

## Contribution

It provides a comparative analysis of the proposed HDR coding method and JPEG XT under different tone-mapping operators, highlighting their performance characteristics.

## Key findings

- Proposed method outperforms JPEG XT with default tone-mapping.
- Performance varies significantly across different tone-mapping operators.
- The study clarifies the characteristic differences between the two coding methods.

## Abstract

We proposed a lossless two-layer HDR coding method using a histogram packing technique. The proposed method was demonstrated to outperform the normative JPEG XT encoder, under the use of the default tone-mapping operator. However, the performance under various tone-mapping operators has not been discussed. In this paper, we aim to compare the performance of the proposed method with that of the JPEG XT encoder under the use of various tone-mapping operators to clearly show the characteristic difference between them.