BPCS Steganography. The goal of steganography is to hide a message in plain sight. BPCS is a method to embed a message in an image by replacing all. Principle of BPCS-Steganography. (Bit-Plane Complexity Segmentation Based Embedding). (KIT-STEGROUP). BPCS-Steganography (Bit-Plane Complexity Segmentation Steganography) is a new steganographic technique invented by Eiji Kawaguchi.
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This form of steganography was proposed jointly by Eiji Kawaguchi and Richard O. An illustration is here. As far as the bit-planes of a steganogralhy image are concerned, complexity  of each bit-plane pattern increases monotonically from the MSB P 1 to the LSB P n.
We intended to release this program for academic evaluation use. If you are not a researcher, steganogdaphy are very much interested in knowing what a steganography program is, then you can also download and use it for try.
While in steganography, the embedding capacity should be large enough. Such topics include, but not all, the followings. All articles with unsourced statements Articles with unsourced statements from April A General feature of the complexity histogram of a “natural image” bit-plane An example is here.
Reference  and  are good articles to know the details of BPCS embedding algorithm. C How the complexity histogram changes after the embedding operation.
References  Eiji Kawaguchi, et al: The most important feature is a large embedding capacity. But, the embedded data can be fragile rather than robust. It is downloadable from other page. Figure 1 illustrates a couple of PBC eteganography of a true color image i.
As far as the Web version “Qtech-HV v” is concerned, we set up a “90 days validity” mechanism on the embedding part of the program. Bcs makes use of this nature of the human vision system. So, if you are a researcher, you can use it free. An image data not having this property will be an artificially processed data. However, if you look carefully, two same-looking areas are entirely different in their sand particle shapes.
It replaces complex areas on the bit-planes of the vessel image with other complex data patterns i. Bit-Plane Decomposition of a Multi-Valued Image A multi-valued image Stegwnography consisting of n-bit pixels can be decomposed into a set of n binary pictures.
Most of the LSB planes look like random pattern. It is also reported that we can replace each noise-looking region with another noise-looking patterns without changing the overall image quality.
P R4 is mixed with both shape-informative and noise-looking regions. In watermarking the “external data” is valuable, but the embedded data is not so valuable. Steganography Steganography tools Steganographic file system Steganography detection. Steganographic file system Steganography detection. This is because the embedded data is secret.
Invitation to BPCS-Steganography
The Human visual system has such a special property that a too-complicated visual pattern can not be perceived as “shape-informative. This is based on our security policy. Graphical User Interface knowledge to make a “user-friendly” program.
This replacing operation is called “embedding. When you want to implement your original Blcs program, you need to tackle varieties of detailed algorithm before you start working on it.
A shape-informative region consists of simple patterns, while a noise-looking steagnography consists of complex patterns . Retrieved from ” https: In this case the data is passed through a [binary image conjugation transformation], in order to create a reciprocal complex representation.
BPCS-Steganography – Wikipedia
Complexity histograms of a non-compressed and a compressed file in general See some examples. The embedding operation in practice is to replace the “complex areas” on the bit planes of the vessel image with the confidential data. Details of the vessel image file format e. Utilize the quantization error of the vessel image for a place to hide secret data However, all these methods have a relatively small data hiding capacity.
E Details of the vessel image file format e.
How you can outwit steganalysis It is practically impossible to make a compatible program with some given BPCS-Steganography program even if the embedding and extracting operations look the same. BPCS-Steganography is absolutely different from traditional techniques. From Wikipedia, the free encyclopedia.
It is reported that two regions can be segmented by using a “black-and-white boarder length” based complexity measure .