| Autor: |
Das, Banhi Dutta Choudhuri, Patra, Anirban, Saha, Arijit, Sikder, Somali Sanyal |
| Zdroj: |
Journal of Optics; 20240101, Issue: Preprints p1-13, 13p |
| Abstrakt: |
Transmission of images over a long distance is a need of the day for different applications. As a lot of information is carried by high-resolution images, huge bandwidth is required to transmit them. So, to make efficient transmissions, compression of images is very important. Again, images involved in various applications carry confidential information and need to be highly secured before transmission. For the purpose of secured transmission, images must be encrypted with robust encryption schemes. In this communication, an effective and secured method for frequency-domain compression and transmission of infrared images is developed which is equally applicable for any other images. It is shown in this communication that the compression ratio can be improved by the proposed technique without compromising the PSNR value. In this technique, the compression ratio is improved from 2.79 to 11.13 without degradation in PSNR value of retrieved images (around 34). Our compression technique involves the modulation of images using amplitude grating. Different orientation angles and grating frequencies are selected for modulation. Security of transmitted images is ensured by 6-D hyper-chaotic encryption. This method is efficient enough to encrypt, transmit, and recover multiple infrared images without the occurrence of aliasing errors. The algorithm shows satisfactory performance for applications where huge image data are to be transmitted in a highly secure way. |
| Databáze: |
Supplemental Index |
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