Prof. Naveen K. Nishchal Profile

Prof. Naveen K. Nishchal

Professor at Indian Institute of Technology Patna

SPIE Involvement:

Editorial Board Member: Optical Engineering | Author

Area of Expertise:

Optical Information Processing , Optical Image Encryption-decryption , Digital Holography , Optical Pattern Recognition , Fractional Fourier Transform based Optical Signal Processing , Fourier Optics

Publications (25)

SPIE Journal Paper | 12 October 2024

Quantitative analysis of phase retrieval with the transport of intensity equation under low-light conditions

Ram Kumar, Alok Gupta, Naveen Nishchal

OE, Vol. 63, Issue 11, 111813, (October 2024) https://doi.org/10.1117/12.10.1117/1.OE.63.11.111813

KEYWORDS: Photons, Phase retrieval, Image quality, Phase imaging, Quantitative analysis, Optical engineering, Image retrieval, Imaging systems, Biological imaging, Cameras

Read Abstract +

SPIE Journal Paper | 15 November 2021

Dynamic stochastic resonance and image fusion based model for quality enhancement of dark and hazy images

Avishek Kumar, Rajib Jha, Naveen Nishchal

JEI, Vol. 30, Issue 06, 063008, (November 2021) https://doi.org/10.1117/12.10.1117/1.JEI.30.6.063008

KEYWORDS: Image fusion, Image enhancement, Stochastic processes, RGB color model, Air contamination, Image quality, Atmospheric modeling, Image processing, Signal to noise ratio, Micro optical fluidics

Read Abstract +

Proceedings Article | 9 October 2021 Presentation + Paper

Presentation + Paper

Transport of intensity equation for low-light quantitative phase imaging and security applications

Alok Gupta, Naveen Nishchal

Proceedings Volume 11898, 118980W (2021) https://doi.org/10.1117/12.2601102

KEYWORDS: Digital holography, Phase imaging, Light emitting diodes, Refractive index, Polarization, Phase retrieval, Image encryption, Information security

Read Abstract +

SPIE Journal Paper | 18 June 2021

Joint Gamma correction and multi-resolution fusion scheme for enhancing haze degraded images

Avishek Kumar, Rajib Jha, Naveen Nishchal

OE, Vol. 60, Issue 06, 063103, (June 2021) https://doi.org/10.1117/12.10.1117/1.OE.60.6.063103

KEYWORDS: Image fusion, Air contamination, Image enhancement, Visualization, Atmospheric modeling, RGB color model, Optical engineering, Image quality, Image acquisition, Electronic filtering

Read Abstract +

Proceedings Article | 9 October 2018 Paper

Paper

Optical asymmetric encryption schemes and attack analysis

Naveen Nishchal

Proceedings Volume 10795, 107950A (2018) https://doi.org/10.1117/12.2323649

KEYWORDS: Image encryption, Polarization, Fourier transforms, Phase retrieval, Computer programming, Computer security, Analytical research, Phase only filters, Information security, Modulation

Read Abstract +

Proceedings Article | 9 October 2018 Presentation + Paper

Presentation + Paper

Simultaneous authentication verification of multiple secured images using joint transform correlation approach

Areeba Fatima, Naveen Nishchal

Proceedings Volume 10795, 1079509 (2018) https://doi.org/10.1117/12.2325538

KEYWORDS: Fourier transforms, Optical correlators, Joint transforms, Information security, Multiplexing, Image encryption, Nonlinear dynamics, Wave propagation, Computer programming, Computer security

Read Abstract +

SPIE Journal Paper | 13 March 2018

Optical image encryption using triplet of functions

- Yatish, Areeba Fatima, Naveen Kumar Nishchal

OE, Vol. 57, Issue 03, 033103, (March 2018) https://doi.org/10.1117/12.10.1117/1.OE.57.3.033103

KEYWORDS: Image encryption, Optical image encryption, Distributed interactive simulations, Matrices, Fourier transforms, Computer programming, Optical engineering, Image compression, Scientific research, Gyrators

Read Abstract +

Proceedings Article | 15 June 2015 Paper

Paper

Double image encryption using gyrator wavelet transform

Isha Mehra, Naveen Nishchal

Proceedings Volume 9654, 96542D (2015) https://doi.org/10.1117/12.2181708

KEYWORDS: Image encryption, Gyrators, Wavelets, Image fusion, Wavelet transforms, Image retrieval, Image quality, Discrete wavelet transforms, Computer security, Optical image encryption

Read Abstract +

Proceedings Article | 26 September 2013 Paper

Paper

Known plain-text attack on asymmetric cryptosystem

Sudheesh Rajput, Naveen Nishchal

Proceedings Volume 8855, 88550U (2013) https://doi.org/10.1117/12.2023834

KEYWORDS: Image encryption, Phase retrieval, Image retrieval, Gyrators, Fractional fourier transform, Computer simulations, Fourier transforms, Image processing, Information security, Computer security

Read Abstract +

Proceedings Article | 26 September 2013 Paper

Paper

Optical asymmetric cryptosystem using polarized light

Sudheesh Rajput, Naveen Nishchal

Proceedings Volume 8855, 885503 (2013) https://doi.org/10.1117/12.2023823

KEYWORDS: Image encryption, Polarization, Fourier transforms, Polarizers, Computer programming, Optical image encryption, Computer security, Numerical simulations, Image quality, Linear polarizers

Read Abstract +

Proceedings Article | 22 June 2013 Paper

Paper

Multiple image encryption based on known-plaintext attack and modified G-S phase retrieval algorithm

Sudheesh Rajput, Naveen Nishchal

Proceedings Volume 8769, 87690X (2013) https://doi.org/10.1117/12.2014462

KEYWORDS: Image encryption, Phase retrieval, Image retrieval, Digital holography, Multiplexing, Spatial light modulators, Computer security, Fractional fourier transform, Computer programming, Numerical simulations

Read Abstract +

Proceedings Article | 22 June 2013 Paper

Paper

Fractional domain asymmetric cryptosystem and cryptanalysis

Sudheesh Rajput, Naveen Nishchal

Proceedings Volume 8769, 87691Y (2013) https://doi.org/10.1117/12.2014375

KEYWORDS: Image encryption, Image retrieval, Computer security, Cryptanalysis, Image processing, Phase retrieval, Scanning probe microscopy, Neodymium, Polarization, Fractional fourier transform

Read Abstract +

SPIE Journal Paper | 18 February 2013

Collision in Fresnel domain asymmetric cryptosystem using phase truncation and authentication verification

Isha Mehra, Sudheesh Rajput, Naveen Nishchal

OE, Vol. 52, Issue 2, 028202, (February 2013) https://doi.org/10.1117/12.10.1117/1.OE.52.2.028202

KEYWORDS: Image encryption, Image retrieval, Joint transforms, Scanning probe microscopy, Optical correlators, Optical engineering, Phase retrieval, Computer simulations, Computer security, Free space

Read Abstract +

SPIE Journal Paper | 1 September 2011

Hierarchical encrypted image watermarking using fractional Fourier domain random phase encoding

Naveen Nishchal

OE, Vol. 50, Issue 09, 097003, (September 2011) https://doi.org/10.1117/12.10.1117/1.3619825

KEYWORDS: Digital watermarking, Image encryption, Image segmentation, Image filtering, Digital filtering, Computer programming, Multiplexing, Image retrieval, Image restoration, Image processing

Read Abstract +

Proceedings Article | 9 April 2007 Paper

Paper

A hybrid digital-optical correlator for automatic target recognition

Arun Gupta, Naveen Nishchal, Vinod Beri

Proceedings Volume 6574, 657406 (2007) https://doi.org/10.1117/12.720983

KEYWORDS: Image filtering, Optical correlators, Wavelets, Optical filters, Spatial light modulators, Signal to noise ratio, Fourier transforms, Computer programming, Digital filtering, Target recognition

Read Abstract +

Proceedings Article | 22 December 2006 Paper

Paper

Wavelet-modified fringe-adjusted joint transform correlator

Alpana Bhagatji, Naveen Nishchal, Arun Gupta, B. Tyagi

Proceedings Volume 6405, 640513 (2006) https://doi.org/10.1117/12.697891

KEYWORDS: Wavelets, Target detection, Fourier transforms, Optical correlators, Joint transforms, Optical filters, CCD cameras, Computer simulations, Image filtering, Target recognition

Read Abstract +

Proceedings Article | 18 May 2006 Paper

Paper

Genetic algorithm based composite wavelet-matched filter for 0 to 360° out-of-plane rotations for target recognition

Arun Gupta, Naveen Nishchal, Vinod Beri

Proceedings Volume 6234, 623409 (2006) https://doi.org/10.1117/12.661672

KEYWORDS: Image filtering, Wavelets, Composites, Genetic algorithms, Spatial light modulators, Target recognition, Digital filtering, Optical correlators, Optical filters, Linear filtering

Read Abstract +

SPIE Journal Paper | 1 February 2006

Binary differential joint-transform correlator based on a ferroelectric-liquid-crystal electrically addressed spatial light modulator

Naveen Nishchal, Shilpi Goyal, Amit Aran, Vinod Beri, Arun Gupta

OE, Vol. 45, Issue 02, 026401, (February 2006) https://doi.org/10.1117/12.10.1117/1.2167931

KEYWORDS: Binary data, Optical correlators, CCD cameras, Cameras, Joint transforms, Optical engineering, Spatial light modulators, Fourier transforms, Computer simulations, Optically addressed spatial light modulators

Read Abstract +

SPIE Journal Paper | 1 December 2004

Fully phase encryption using digital holography

Naveen Nishchal, Joby Joseph, Kehar Singh

OE, Vol. 43, Issue 12, (December 2004) https://doi.org/10.1117/12.10.1117/1.1811085

KEYWORDS: Image encryption, Holograms, Digital holography, Fourier transforms, Digital recording, CCD cameras, Charge-coupled devices, Spatial light modulators, Holography, Phase contrast

Read Abstract +

SPIE Journal Paper | 1 October 2004

Fully phase-based encryption using fractional order Fourier domain random phase encoding: error analysis

Naveen Nishchal, Joby Joseph, Kehar Singh

OE, Vol. 43, Issue 10, (October 2004) https://doi.org/10.1117/12.10.1117/1.1790503

KEYWORDS: Image encryption, Image restoration, Binary data, Image quality, Computer programming, Computer simulations, Error analysis, Signal to noise ratio, Image compression, Optical image encryption

Read Abstract +

SPIE Journal Paper | 1 December 2003

Optical encryption using a localized fractional Fourier transform

Naveen Nishchal, G. Unnikrishnan, Joby Joseph, Kehar Singh

OE, Vol. 42, Issue 12, (December 2003) https://doi.org/10.1117/12.10.1117/1.1624850

KEYWORDS: Image segmentation, Image encryption, Fractional fourier transform, Computer security, Optical image encryption, Fourier transforms, Diffractive optical elements, Holography, Optical engineering, Computer simulations

Read Abstract +

Proceedings Article | 23 October 2003 Paper

Paper

Fully phase encrypted memory using cascaded extended fractional Fourier transform

Naveen Nishchal, Joby Joseph, Kehar Singh

Proceedings Volume 5202, (2003) https://doi.org/10.1117/12.503966

KEYWORDS: Image encryption, Crystals, Phase contrast, Phase conjugation, Lithium niobate, Fractional fourier transform, Computer programming, Spatial frequencies, Spatial light modulators, Holograms

Read Abstract +

SPIE Journal Paper | 1 June 2003

Fully phase encryption using fractional Fourier transform

Naveen Nishchal, Joby Joseph, Kehar Singh

OE, Vol. 42, Issue 06, (June 2003) https://doi.org/10.1117/12.10.1117/1.1570429

KEYWORDS: Image encryption, Phase contrast, Spatial light modulators, Computer programming, Phase shifts, Fractional fourier transform, Crystals, Fourier transforms, Sensors, Phase shift keying

Proceedings Article | 20 November 2002 Paper

Paper

Photorefractive optical processing for data security

Kehar Singh, G. Unnikrishnan, Naveen Nishchal

Proceedings Volume 4803, (2002) https://doi.org/10.1117/12.452711

KEYWORDS: Image encryption, Computer programming, Computer security, Holography, Digital holography, Crystals, Optical image encryption, Optical signal processing, Spatial light modulators, Data communications

Read Abstract +

Proceedings Article | 16 September 2002 Paper

Paper

Fractional Fourier transform: applications in information optics

Kehar Singh, Naveen Nishchal

Proceedings Volume 4929, (2002) https://doi.org/10.1117/12.483221

KEYWORDS: Image encryption, Fourier transforms, Fractional fourier transform, Optical correlators, Optical signal processing, Computer programming, Wigner distribution functions, Optical filters, Optical pattern recognition, Filtering (signal processing)

Read Abstract +

Showing 5 of 25 publications

SIGN IN TO:

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Advertisement

Advertisement