OpenStego is a steganography application that provides two functionalities: a) Data Hiding: It can hide any data within an image file. b) Watermarking: Watermarking image files with an invisible signature. It can be used to detect unauthorized file copying.
I'm using Windows, tested with both openstego-0.8.6.zip, Setup-OpenStego-0.8.6.exe, and openstego-0.7.4.zip.
Any cover file with transparency seems to lose its transparency after data hiding. I used a simple .txt file as the message file.
Image used:
Output file:
Digital watermarking also gives error code: Image cannot be encoded with compression type BI_RGB) when using images with transparency. The image quality also decreases substantially with artifacts in the output using an opaque image, and the signature trength (via verification) is low (38%).
Image used:
Output watermarked file:
I have searched previous issues for image quality but did not find an .ini file for changing image compression settings.
I'm using Windows, tested with both
openstego-0.8.6.zip,Setup-OpenStego-0.8.6.exe, andopenstego-0.7.4.zip.Any cover file with transparency seems to lose its transparency after data hiding. I used a simple .txt file as the message file.Image used:
Output file:
Digital watermarking also gives error code: Image cannot be encoded with compression type BI_RGB) when using images with transparency. The image quality also decreases substantially with artifacts in the output using an opaque image, and the signature trength (via verification) is low (38%).
Image used:
Output watermarked file:
I have searched previous issues for image quality but did not find an .ini file for changing image compression settings.