Search Results for author: Soumendu Chakraborty

Found 10 papers, 2 papers with code

Local Quadruple Pattern: A Novel Descriptor for Facial Image Recognition and Retrieval

no code implementations3 Jan 2022 Soumendu Chakraborty, Satish Kumar Singh, Pavan Chakraborty

The major problem in increasing the local neighbourhood is that, it also increases the feature length of the descriptor.

Retrieval

Local Gradient Hexa Pattern: A Descriptor for Face Recognition and Retrieval

no code implementations3 Jan 2022 Soumendu Chakraborty, Satish Kumar Singh, Pavan Chakraborty

Accuracy of these descriptors depends on the precision of mapping the relationship that exists in the local neighborhood of a facial image into microstructures.

Face Recognition Retrieval

R-Theta Local Neighborhood Pattern for Unconstrained Facial Image Recognition and Retrieval

no code implementations3 Jan 2022 Soumendu Chakraborty, Satish Kumar Singh, Pavan Chakraborty

RTLNP exploits relationships amongst the pixels in local neighborhood of the reference pixel at different angular and radial widths.

Face Image Retrieval Retrieval

Local Directional Gradient Pattern: A Local Descriptor for Face Recognition

no code implementations3 Jan 2022 Soumendu Chakraborty, Satish Kumar Singh, Pavan Chakraborty

The proposed local directional gradient pattern (LDGP) is a 1D local micropattern computed by encoding the relationships between the higher order derivatives of the reference pixel in four distinct directions.

Face Recognition

Cascaded Asymmetric Local Pattern: A Novel Descriptor for Unconstrained Facial Image Recognition and Retrieval

no code implementations3 Jan 2022 Soumendu Chakraborty, Satish Kumar Singh, Pavan Chakraborty

In this paper a novel hand crafted cascaded asymmetric local pattern (CALP) is proposed for retrieval and recognition facial image.

Retrieval

Centre Symmetric Quadruple Pattern: A Novel Descriptor for Facial Image Recognition and Retrieval

no code implementations3 Jan 2022 Soumendu Chakraborty, Satish Kumar Singh, Pavan Chakraborty

Distinctive information captured by the kernel with limited number of pixel achieves satisfactory recognition and retrieval accuracies on facial images taken under constrained environment (controlled variations in light, pose, expressions, and background).

Retrieval

A Novel Local Binary Pattern Based Blind Feature Image Steganography

no code implementations16 Jan 2021 Soumendu Chakraborty, Anand Singh Jalal

The proposed scheme computes the local binary pattern to hide the bits of the secret image in such a way that the local relationship that exists in the cover are preserved in the resulting stego image.

Image Steganography

diffGrad: An Optimization Method for Convolutional Neural Networks

1 code implementation12 Sep 2019 Shiv Ram Dubey, Soumendu Chakraborty, Swalpa Kumar Roy, Snehasis Mukherjee, Satish Kumar Singh, Bidyut Baran Chaudhuri

In this paper, a novel optimizer is proposed based on the difference between the present and the immediate past gradient (i. e., diffGrad).

Image Categorization

Average Biased ReLU Based CNN Descriptor for Improved Face Retrieval

no code implementations2 Apr 2018 Shiv Ram Dubey, Soumendu Chakraborty

It is observed that the AB-ReLU outperforms the ReLU when used with a pre-trained VGGFace model over the face datasets.

Retrieval

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