Format Compliant Degradation for PNG Image

Abstract

This paper proposes format compliant degradation method for Portable Network Graphics (PNG). For PNG degradation, improved prefix method and noise generation method are developed. Security analysis showed proposed scheme is secure, and experiments results showed expected functionality and efficiency.

A Comparative Study on Steganography Digital Images: A Case Study of Scalable Vector Graphics (SVG) and Portable Network Graphics (PNG) Images Formats

“…Firstly, it presents SVG and PNG images format sizes prior to steganography processing. This is followed by a discussion on SVG and PNG images format sizes after steganography processing [10]- [15], [18], [19].…”

“…It supports animation and scalability, since its data is saved as a geometric description, instead of the description of each single image pixel in a raster digital image. Table I presents basic comparisons between SVG and PNG images format [2], [5]- [8], [10], [11], [15], [16]. …”

“…The animated images format of PNG is MNG and APNG images formats. PNG image format is commonly used for graphs, diagrams, and anywhere to display flat colors and lines, not needing scaling up [2], [5]- [8], [10], [11], [15], [16].…”

“…Besides that, the lines project a stroke merit like various chunkiness and colors for a www.ijacsa.thesai.org solid or dashed line. The most commonly used vector digital images are Vector Markup Language (VML) and Scalable Vector Graphics (SVG) images formats [2], [5]- [8], [10], [11], [15], [16].…”