Search Results for author: Prabir Kumar Biswas

Found 22 papers, 7 papers with code

Histopathological Image Analysis with Style-Augmented Feature Domain Mixing for Improved Generalization

1 code implementation31 Oct 2023 Vaibhav Khamankar, Sutanu Bera, Saumik Bhattacharya, Debashis Sen, Prabir Kumar Biswas

Style transfer-based data augmentation is an emerging technique that can be used to improve the generalizability of machine learning models for histopathological images.

Data Augmentation Domain Generalization +2

Self Supervised Low Dose Computed Tomography Image Denoising Using Invertible Network Exploiting Inter Slice Congruence

no code implementations3 Nov 2022 Sutanu Bera, Prabir Kumar Biswas

We have shown the aforementioned is similar to training a neural network to minimize the distance between clean NDCT and noisy LDCT image pairs.

Image Denoising

Sub-Aperture Feature Adaptation in Single Image Super-resolution Model for Light Field Imaging

no code implementations25 Jul 2022 Aupendu Kar, Suresh Nehra, Jayanta Mukhopadhyay, Prabir Kumar Biswas

However, the spatial resolution is significantly constrained in commercial microlens based LF cameras because of the inherent multiplexing of spatial and angular information.

Image Super-Resolution

Zero-Shot Single Image Restoration Through Controlled Perturbation of Koschmieder's Model

no code implementations CVPR 2021 Aupendu Kar, Sobhan Kanti Dhara, Debashis Sen, Prabir Kumar Biswas

Our zero-shot network estimates the parameters of the Koschmieder's model, which describes the degradation in the input image, to perform image restoration.

Image Dehazing Low-Light Image Enhancement +1

Noise Conscious Training of Non Local Neural Network powered by Self Attentive Spectral Normalized Markovian Patch GAN for Low Dose CT Denoising

1 code implementation11 Nov 2020 Sutanu Bera, Prabir Kumar Biswas

Next, we moved towards the problem of non-stationarity of CT noise and introduced a new noise aware mean square error loss for LDCT denoising.

Denoising Image Reconstruction

Progressive Update Guided Interdependent Networks for Single Image Dehazing

1 code implementation4 Aug 2020 Aupendu Kar, Sobhan Kanti Dhara, Debashis Sen, Prabir Kumar Biswas

The estimated parameters are then used to guide our dehazing module, where the estimates are progressively updated by novel convolutional networks.

Image Dehazing Single Image Dehazing

Lightweight Modules for Efficient Deep Learning based Image Restoration

1 code implementation11 Jul 2020 Avisek Lahiri, Sourav Bairagya, Sutanu Bera, Siddhant Haldar, Prabir Kumar Biswas

We also present and analyse our results highlighting the drawbacks of applying depthwise separable convolutional kernel (a popular method for efficient classification network) for sub-pixel convolution based upsampling (a popular upsampling strategy for low-level vision applications).

Classification Denoising +6

SVDocNet: Spatially Variant U-Net for Blind Document Deblurring

no code implementations NeurIPS Workshop Document_Intelligen 2019 Bharat Mamidibathula, Prabir Kumar Biswas

Blind document deblurring is a fundamental task in the field of document processing and restoration, having wide enhancement applications in optical character recognition systems, forensics, etc.

Deblurring Optical Character Recognition +1

Faster Unsupervised Semantic Inpainting: A GAN Based Approach

no code implementations14 Aug 2019 Avisek Lahiri, Arnav Kumar Jain, Divyasri Nadendla, Prabir Kumar Biswas

In this paper, we propose to improve the inference speed and visual quality of contemporary baseline of Generative Adversarial Networks (GAN) based unsupervised semantic inpainting.

Image Inpainting Video Inpainting

Fast Bayesian Uncertainty Estimation and Reduction of Batch Normalized Single Image Super-Resolution Network

1 code implementation CVPR 2021 Aupendu Kar, Prabir Kumar Biswas

Furthermore, this paper proposes an approach to reduce the model's uncertainty for an input image, and it helps to defend the adversarial attacks on the image super-resolution model.

Adversarial Defense Image Reconstruction +1

Improved Techniques for GAN based Facial Inpainting

no code implementations20 Oct 2018 Avisek Lahiri, Arnav Jain, Divyasri Nadendla, Prabir Kumar Biswas

Current benchmark models are susceptible to initial solutions of non-convex optimization criterion of GAN based inpainting.

Face Recognition Facial Inpainting +1

Unsupervised Adversarial Visual Level Domain Adaptation for Learning Video Object Detectors from Images

1 code implementation4 Oct 2018 Avisek Lahiri, Charan Reddy, Prabir Kumar Biswas

Though image object detectors have shown rapid progress in recent years with the release of multiple large-scale static image datasets, object detection on videos still remains an open problem due to scarcity of annotated video frames.

Domain Adaptation Image-to-Image Translation +5

Retinal Vessel Segmentation under Extreme Low Annotation: A Generative Adversarial Network Approach

no code implementations5 Sep 2018 Avisek Lahiri, Vineet Jain, Arnab Mondal, Prabir Kumar Biswas

The proposed method is an extension of our previous work with the addition of a new unsupervised adversarial loss and a structured prediction based architecture.

Generative Adversarial Network Image Segmentation +4

Improving Consistency and Correctness of Sequence Inpainting using Semantically Guided Generative Adversarial Network

1 code implementation16 Nov 2017 Avisek Lahiri, Arnav Jain, Prabir Kumar Biswas, Pabitra Mitra

Contemporary benchmark methods for image inpainting are based on deep generative models and specifically leverage adversarial loss for yielding realistic reconstructions.

Generative Adversarial Network Image Inpainting

Deep Neural Ensemble for Retinal Vessel Segmentation in Fundus Images towards Achieving Label-free Angiography

no code implementations19 Sep 2016 Avisek Lahiri, Abhijit Guha Roy, Debdoot Sheet, Prabir Kumar Biswas

Automated segmentation of retinal blood vessels in label-free fundus images entails a pivotal role in computed aided diagnosis of ophthalmic pathologies, viz., diabetic retinopathy, hypertensive disorders and cardiovascular diseases.

Retinal Vessel Segmentation Segmentation

WEPSAM: Weakly Pre-Learnt Saliency Model

no code implementations3 May 2016 Avisek Lahiri, Sourya Roy, Anirban Santara, Pabitra Mitra, Prabir Kumar Biswas

Recent thrust in saliency prediction research is to learn high level semantics using ground truth eye fixation datasets.

Saliency Prediction

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