Alexey Gruzdev a.s.gruzdev@yandex€¦ · Alexey Gruzdev [email protected] January 27, 2017...

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Previous activities Current activities Overview of what was investigated Alexey Gruzdev [email protected] January 27, 2017 Alexey Gruzdev Overview of what was investigated

Transcript of Alexey Gruzdev a.s.gruzdev@yandex€¦ · Alexey Gruzdev [email protected] January 27, 2017...

Page 1: Alexey Gruzdev a.s.gruzdev@yandex€¦ · Alexey Gruzdev a.s.gruzdev@yandex.ru January 27, 2017 Alexey Gruzdev Overview of what was investigated. Previous activities Current activities

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Overview of what was investigated

Alexey [email protected]

January 27, 2017

Alexey Gruzdev Overview of what was investigated

Page 2: Alexey Gruzdev a.s.gruzdev@yandex€¦ · Alexey Gruzdev a.s.gruzdev@yandex.ru January 27, 2017 Alexey Gruzdev Overview of what was investigated. Previous activities Current activities

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Agenda

1 Previous activitiesObject DetectionSemantic SegmentationStyle TransferDiabetic Retinopathy Detection

2 Current activitiesReinforcement LearningDeep Reinforcement Learning

Alexey Gruzdev Overview of what was investigated

Page 3: Alexey Gruzdev a.s.gruzdev@yandex€¦ · Alexey Gruzdev a.s.gruzdev@yandex.ru January 27, 2017 Alexey Gruzdev Overview of what was investigated. Previous activities Current activities

Previous activitiesCurrent activities

Object DetectionSemantic SegmentationStyle TransferDiabetic Retinopathy Detection

Object Detection problem formulation

Input: RGB or grayscale image

Task:

find all existing objects on the image

for each object, calculate ”accurate” bounding box

Alexey Gruzdev Overview of what was investigated

Page 4: Alexey Gruzdev a.s.gruzdev@yandex€¦ · Alexey Gruzdev a.s.gruzdev@yandex.ru January 27, 2017 Alexey Gruzdev Overview of what was investigated. Previous activities Current activities

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Object DetectionSemantic SegmentationStyle TransferDiabetic Retinopathy Detection

Datasets for Object Detection

PASCAL Visual Object Classes Challenge 2012

SUN: Large-scale Scene Recognition from Abbey to Zoo

ImageNet Large Scale Visual Recognition Challenge

Microsoft Common Objects in Context

Alexey Gruzdev Overview of what was investigated

Page 5: Alexey Gruzdev a.s.gruzdev@yandex€¦ · Alexey Gruzdev a.s.gruzdev@yandex.ru January 27, 2017 Alexey Gruzdev Overview of what was investigated. Previous activities Current activities

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Object DetectionSemantic SegmentationStyle TransferDiabetic Retinopathy Detection

Semantic Segmentation problem formulation

Input: RGB or grayscale image

Task:

label each pixel to particular class

Alexey Gruzdev Overview of what was investigated

Page 6: Alexey Gruzdev a.s.gruzdev@yandex€¦ · Alexey Gruzdev a.s.gruzdev@yandex.ru January 27, 2017 Alexey Gruzdev Overview of what was investigated. Previous activities Current activities

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Object DetectionSemantic SegmentationStyle TransferDiabetic Retinopathy Detection

Style Transfer

Alexey Gruzdev Overview of what was investigated

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Object DetectionSemantic SegmentationStyle TransferDiabetic Retinopathy Detection

Diabetic Retinopathy Detection

Input data - set of training/testing images. For each trainingimage also known its class (the degree of severity)

Output data - A clinician has rated the presence of diabeticretinopathy in each image on a scale of 0 to 4, according to thefollowing scale:

0 - No DR

1 - Mild

2 - Moderate

3 - Severe

4 - Proliferative DR

Goal: - create algorithm, which is able to determine the degree ofseverety for input retina image.

Alexey Gruzdev Overview of what was investigated

Page 8: Alexey Gruzdev a.s.gruzdev@yandex€¦ · Alexey Gruzdev a.s.gruzdev@yandex.ru January 27, 2017 Alexey Gruzdev Overview of what was investigated. Previous activities Current activities

Previous activitiesCurrent activities

Object DetectionSemantic SegmentationStyle TransferDiabetic Retinopathy Detection

Diabetic Retinopathy Detection

Alexey Gruzdev Overview of what was investigated

Page 9: Alexey Gruzdev a.s.gruzdev@yandex€¦ · Alexey Gruzdev a.s.gruzdev@yandex.ru January 27, 2017 Alexey Gruzdev Overview of what was investigated. Previous activities Current activities

Previous activitiesCurrent activities

Object DetectionSemantic SegmentationStyle TransferDiabetic Retinopathy Detection

Diabetic Retinopathy Detection

Alexey Gruzdev Overview of what was investigated

Page 10: Alexey Gruzdev a.s.gruzdev@yandex€¦ · Alexey Gruzdev a.s.gruzdev@yandex.ru January 27, 2017 Alexey Gruzdev Overview of what was investigated. Previous activities Current activities

Previous activitiesCurrent activities

Object DetectionSemantic SegmentationStyle TransferDiabetic Retinopathy Detection

Diabetic Retinopathy Detection

Alexey Gruzdev Overview of what was investigated

Page 11: Alexey Gruzdev a.s.gruzdev@yandex€¦ · Alexey Gruzdev a.s.gruzdev@yandex.ru January 27, 2017 Alexey Gruzdev Overview of what was investigated. Previous activities Current activities

Previous activitiesCurrent activities

Object DetectionSemantic SegmentationStyle TransferDiabetic Retinopathy Detection

Diabetic Retinopathy Detection

Alexey Gruzdev Overview of what was investigated

Page 12: Alexey Gruzdev a.s.gruzdev@yandex€¦ · Alexey Gruzdev a.s.gruzdev@yandex.ru January 27, 2017 Alexey Gruzdev Overview of what was investigated. Previous activities Current activities

Previous activitiesCurrent activities

Object DetectionSemantic SegmentationStyle TransferDiabetic Retinopathy Detection

Diabetic Retinopathy Detection

Alexey Gruzdev Overview of what was investigated

Page 13: Alexey Gruzdev a.s.gruzdev@yandex€¦ · Alexey Gruzdev a.s.gruzdev@yandex.ru January 27, 2017 Alexey Gruzdev Overview of what was investigated. Previous activities Current activities

Previous activitiesCurrent activities

Reinforcement LearningDeep Reinforcement Learning

Reinforcement Learning

Alexey Gruzdev Overview of what was investigated

Page 14: Alexey Gruzdev a.s.gruzdev@yandex€¦ · Alexey Gruzdev a.s.gruzdev@yandex.ru January 27, 2017 Alexey Gruzdev Overview of what was investigated. Previous activities Current activities

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Reinforcement LearningDeep Reinforcement Learning

Deep Reinforcement Learning

Motivation:

Deep means that at least one function is approximated byDeep Neural Network

Reinforcement Learning is useful for robotics, continuouscontrol, decision making

Data is available. Thanks to OpenAI!

Alexey Gruzdev Overview of what was investigated

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Reinforcement LearningDeep Reinforcement Learning

Questions?

Alexey Gruzdev Overview of what was investigated

Page 16: Alexey Gruzdev a.s.gruzdev@yandex€¦ · Alexey Gruzdev a.s.gruzdev@yandex.ru January 27, 2017 Alexey Gruzdev Overview of what was investigated. Previous activities Current activities

Previous activitiesCurrent activities

Reinforcement LearningDeep Reinforcement Learning

Alexey Gruzdev Overview of what was investigated