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Steganography is technique of hiding a data under cover media using different steganography tools. Image steganography is hiding of data (Text/Image/Audio/Video) under a cover as Image. This review paper presents classification of image steganography and the comparison of various Image steganography tools using different image formats. Analyzing numerous tools on the basis of Image features and extracting the best one. Some of the tools available in the market were selected based on the frequent use; these tools were tested using the same input on all of them. Specific text was embedded within all host images for each of the six Steganography tools selected. The results of the experiment reveal that all the six tools were relatively performing at the same level, though some software performs better than others through efficiency. And it was based on the image features like size, dimensions, and pixel value and histogram differentiation.

Keywords

Information Security, Carrier, Domain, Privacy, Secret Text, Information Hiding, Cryptography, Steganography, Steganography Tools.

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Optical Character Recognition Using Deep Learning – A Technical Review

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Authors

Preeti P. Bhatt ¹, Isha Patel ²

Affiliations
1 BMIIT, IN
2 Babu Madhav Institute of Information Technology, Uka Tarsadia University-Bardoli, IN

Source

National Journal of System and Information Technology, Vol 11, No 1 (2018), Pagination: 55-66

Abstract

OCR is used to identify the character from human written text. To recognize the text segmentation of character is important stage. So here, we addressed different techniques to recognize the character. This document also presents comparison of different languages for character and numeral recognition with its accuracy achieved by different writer. Segmentation problem of each language were different also handwritten character was also varied user to user, so it is necessary to make OCR systems more effective and accurate for segmentation. Comparative study concludes that deep learning technique gives good segmentation and gives better result in case with large dataset compares to other techniques.

Keywords

OCR, Deep Learning, CNN.

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