Edge Detection and Huffman Encoding Based Image Steganography with High Data Embedding Capacity.

In the present study, an edge detector and Huffman encoding based image-steganography approach for high data embedding capacity is presented. High frequency pixel region is exploited to preserve the imperceptibility characteristics of the stego-image and cover-image. Confidential data is encoded with Huffman encoding based technique. Finally, 2n correction is applied to maintain the visual quality. A security key enhances the robustness of embedding and extraction process of the confidential message. The proficiency of the method is also collated with already proposed techniques with various evaluation parameters.