Search Results for author: Avik Bhattacharya

Found 7 papers, 3 papers with code

A Novel Multi-scale Attention Feature Extraction Block for Aerial Remote Sensing Image Classification

no code implementations27 Aug 2023 Chiranjibi Sitaula, Jagannath Aryal, Avik Bhattacharya

Classification of very high-resolution (VHR) aerial remote sensing (RS) images is a well-established research area in the remote sensing community as it provides valuable spatial information for decision-making.

Classification Decision Making +2

Local Window Attention Transformer for Polarimetric SAR Image Classification

1 code implementation IEEE Geoscience and Remote Sensing Letters 2023 Ali Jamali, Swalpa Kumar Roy, Avik Bhattacharya, Pedram Ghamisi

The PolSARFormer outperformed the Swin Transformer and FNet by the margin of 5. 86% and 17. 63%, in terms of average accuracy in the San Francisco data benchmark.

Classification Earth Observation +1

CrossATNet - A Novel Cross-Attention Based Framework for Sketch-Based Image Retrieval

no code implementations20 Apr 2021 Ushasi Chaudhuri, Biplab Banerjee, Avik Bhattacharya, Mihai Datcu

While we define a cross-modal triplet loss to ensure the discriminative nature of the shared space, an innovative cross-modal attention learning strategy is also proposed to guide feature extraction from the image domain exploiting information from the respective sketch counterpart.

Retrieval Sketch-Based Image Retrieval +2

A Zero-Shot Sketch-based Inter-Modal Object Retrieval Scheme for Remote Sensing Images

1 code implementation12 Aug 2020 Ushasi Chaudhuri, Biplab Banerjee, Avik Bhattacharya, Mihai Datcu

We perform a thorough bench-marking of this dataset and demonstrate that the proposed network outperforms other state-of-the-art methods for zero-shot sketch-based retrieval framework in remote sensing.

Retrieval Triplet

CMIR-NET : A Deep Learning Based Model For Cross-Modal Retrieval In Remote Sensing

1 code implementation9 Apr 2019 Ushasi Chaudhuri, Biplab Banerjee, Avik Bhattacharya, Mihai Datcu

In particular, we are interested in two application scenarios: i) cross-modal retrieval between panchromatic (PAN) and multi-spectral imagery, and ii) multi-label image retrieval between very high resolution (VHR) images and speech based label annotations.

Cross-Modal Retrieval Information Retrieval +2

Unsupervised Classification of PolSAR Data Using a Scattering Similarity Measure Derived from a Geodesic Distance

no code implementations1 Dec 2017 Debanshu Ratha, Avik Bhattacharya, Alejandro C. Frery

This geodesic distance is obtained between an elementary target and the observed Kennaugh matrix, and it is further utilized to compute a similarity measure between scattering mechanisms.

General Classification

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