Search Results for author: Kohei Ozaki

Found 3 papers, 2 papers with code

Two-stage Discriminative Re-ranking for Large-scale Landmark Retrieval

2 code implementations25 Mar 2020 Shuhei Yokoo, Kohei Ozaki, Edgar Simo-Serra, Satoshi Iizuka

Due to the variance of the images, which include extreme viewpoint changes such as having to retrieve images of the exterior of a landmark from images of the interior, this is very challenging for approaches based exclusively on visual similarity.

Diversity Image Retrieval +4

Team PFDet's Methods for Open Images Challenge 2019

no code implementations25 Oct 2019 Yusuke Niitani, Toru Ogawa, Shuji Suzuki, Takuya Akiba, Tommi Kerola, Kohei Ozaki, Shotaro Sano

Using this method, the team PFDet achieved 3rd and 4th place in the instance segmentation and the object detection track, respectively.

Instance Segmentation Object +4

Large-scale Landmark Retrieval/Recognition under a Noisy and Diverse Dataset

1 code implementation10 Jun 2019 Kohei Ozaki, Shuhei Yokoo

Besides, we devise a discriminative re-ranking method to address the diversity of the dataset for landmark retrieval.

Diversity Landmark Recognition +3

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