Abstract
Today image steganography plays a key role for exchanging a secret data through the internet. However, the optimal choice of images formats for processing steganography is still an open issue; therefore, this research comes into a table. This research conducts a comparative study between Scalable Vector Graphics (SVG) image format and Portable Network Graphics (PNG) image format. As results show, SVG image format is more efficient than PNG image format in terms of capacity and scalability before and after processing steganography. As well, SVG image format helps to increase simplicity and performance for processing steganography, since it is an XML text file. Our comparative study provides significant results between SVG and PNG images, which have not been seen in the previous related studies.
Highlights
Nowadays, steganography is used widely for delivering a secure message among different parties distributed across the world
The size of Lena image when saved in Scalable Vector Graphics (SVG) image format using Inkscape software is 562,514 Bytes, while its size is 1,275,975 Bytes when saved in Portable Network Graphics (PNG) image format
The size of Lena image when saved in SVG image format using Visio software is 288,569 Bytes, while its size is 841,419 Bytes when saved in PNG image format
Summary
Steganography is used widely for delivering a secure message among different parties distributed across the world. The raster digital images are bitmaps that are defined through a grid of specific pixels, which jointly structure the digital image. Raster images can encompass millions of different colors, with each one being represented by a single pixel. Vector digital images are constructed based on mathematical forms that state geometric features like rectangles, curves, lines, circles, and polygons. These components are loaded with gradients, color, blends, and tints.
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