1 code implementation • CVPR 2023 • Tianyu Zhu, Bryce Ferenczi, Pulak Purkait, Tom Drummond, Hamid Rezatofighi, Anton Van Den Hengel
Annotating rotated bounding boxes is such a laborious process that they are not provided in many detection datasets where axis-aligned annotations are used instead.
no code implementations • ICCV 2023 • Peixia Li, Pulak Purkait, Thalaiyasingam Ajanthan, Majid Abdolshah, Ravi Garg, Hisham Husain, Chenchen Xu, Stephen Gould, Wanli Ouyang, Anton Van Den Hengel
Each learning group consists of a teacher network, a student network and a novel filter module.
no code implementations • CVPR 2022 • Alexander Long, Wei Yin, Thalaiyasingam Ajanthan, Vu Nguyen, Pulak Purkait, Ravi Garg, Alan Blair, Chunhua Shen, Anton Van Den Hengel
We introduce Retrieval Augmented Classification (RAC), a generic approach to augmenting standard image classification pipelines with an explicit retrieval module.
Ranked #6 on
Long-tail Learning
on iNaturalist 2018
1 code implementation • ECCV 2020 • Pulak Purkait, Tat-Jun Chin, Ian Reid
Although the idea of replacing robust optimization methods by a graph-based network is demonstrated only for multiple rotation averaging, it could easily be extended to other graph-based geometric problems, for example, pose-graph optimization.
no code implementations • ECCV 2020 • Pulak Purkait, Christopher Zach, Ian Reid
Our method learns the co-occurrences, and appearance parameters such as shape and pose, for different objects categories through a grammar-based auto-encoder, resulting in a compact and accurate representation for scene layouts.
no code implementations • 26 Sep 2019 • Shin-Fang Ch'ng, Naoya Sogi, Pulak Purkait, Tat-Jun Chin, Kazuhiro Fukui
Planar markers are useful in robotics and computer vision for mapping and localisation.
no code implementations • 7 Jun 2019 • Pulak Purkait, Christopher Zach, Ian Reid
In our experiments we demonstrate that a CNN trained by minimizing the proposed loss is able to predict semantic categories for visible and occluded object parts without requiring to increase the network size (compared to a standard segmentation task).
1 code implementation • 8 Jan 2019 • Ranjan Mondal, Pulak Purkait, Sanchayan Santra, Bhabatosh Chanda
Mathematical morphological methods have successfully been applied to filter out (emphasize or remove) different structures of an image.
1 code implementation • 10 Aug 2018 • Pulak Purkait, Ujwal Bonde, Christopher Zach
A major element of depth perception and 3D understanding is the ability to predict the 3D layout of a scene and its contained objects for a novel pose.
no code implementations • 22 Mar 2018 • Pulak Purkait, Christopher Zach, Anders Eriksson
Robust parameter estimation in computer vision is frequently accomplished by solving the maximum consensus (MaxCon) problem.
no code implementations • 6 Mar 2018 • Cheng Zhao, Li Sun, Pulak Purkait, Tom Duckett, Rustam Stolkin
Dense 2D flow and a depth image are generated from monocular images by sub-networks, which are then used by a 3D flow associated layer in the L-VO network to generate dense 3D flow.
1 code implementation • 9 Dec 2017 • Pulak Purkait, Cheng Zhao, Christopher Zach
In this work we design a deep neural network architecture based on sparse feature descriptors to estimate the absolute pose of an image.
no code implementations • 8 Dec 2017 • Pulak Purkait, Christopher Zach
Modern automotive vehicles are often equipped with a budget commercial rolling shutter camera.
no code implementations • ICCV 2017 • Pulak Purkait, Christopher Zach, Ales Leonardis
A vast majority of consumer cameras operate the rolling shutter mechanism, which often produces distorted images due to inter-row delay while capturing an image.
no code implementations • 30 Sep 2017 • Cheng Zhao, Li Sun, Pulak Purkait, Rustam Stolkin
For intelligent robotics applications, extending 3D mapping to 3D semantic mapping enables robots to, not only localize themselves with respect to the scene's geometrical features but also simultaneously understand the higher level meaning of the scene contexts.
no code implementations • IEEE Transactions on Pattern Analysis and Machine Intelligence 2016 • Pulak Purkait, Tat-Jun Chin, Hanno Ackermann, David Suter
The extension of conventional clustering to hypergraph clustering, which involves higher order similarities instead of pairwise similarities, is increasingly gaining attention in computer vision.
no code implementations • CVPR 2015 • Tat-Jun Chin, Pulak Purkait, Anders Eriksson, David Suter
We aim to change this state of affairs by proposing a very efficient algorithm for global maximisation of consensus.