Category: Research Topics

CVPR ‘22, Part IV: Synthetic Data Generation

We continue the long series of reviews for CVPR 2022 papers related to synthetic data. We’ve had three installments so far, devoted to new datasets, use cases for synthetic data, and a very special use case: digital humans. Today, we will discuss papers that can help with generating synthetic data, so expect a lot of 3D model reconstruction, new generative models, especially in 3D, and generally a lot of CGI-related goodness (image generated by DALL-E-Mini by craiyon.com with the prompt “robot designer making a 3D mesh”).

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CVPR ‘22, Part III: Digital Humans

Last time, we talked about new use cases for synthetic data, from crowd counting to fractal-based synthetic images for pretraining large models. But there is a large set of use cases that we did not talk about, united by their relation to digital humans: human avatars, virtual try-on for clothes, machine learning for improving animations in synthetic humans, and much more. Today, we talk about the human side of CVPR 2022, considering two primary applications: conditional generation for applications such as virtual try-on and learning 3D avatars from 2D images (image generated by DALL-E-Mini by craiyon.com with the prompt “virtual human in the metaverse”).

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CVPR ‘22, Part II: New Use Cases for Synthetic Data

Last time, we started a new series of posts: an overview of papers from CVPR 2022 that are related to synthetic data. This year’s CVPR has over 2000 accepted papers, and many of them touch upon our main topic on this blog. In today’s installment, we look at papers that make use of synthetic data to advance a number of different use cases in computer vision, along with a couple of very interesting and novel ideas that extend the applicability of synthetic data in new directions. We will even see some fractals as synthetic data! (image source)

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CVPR ‘22, Part I: New Synthetic Datasets

CVPR 2022, the largest and most prestigious conference in computer vision and one of the most important ML venues in general, has just finished in New Orleans. With over 2000 accepted papers, reviewing the contributions of this year’s CVPR appears to be a truly gargantuan task. Over the next series of blog posts, we will attempt to go over the most interesting papers directly related to our main topic: synthetic data. Today, I present the first but definitely not the last installment devoted to papers from CVPR 2022.

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Driving Model Performance with Synthetic Data VII: Model-Based Domain Adaptation

After a long hiatus, we return from interviews to long forms, continuing (and hopefully finishing) our series on how synthetic data is used in machine learning and how machine learning models can adapt to using synthetic data. This is our seventh installment in the series (part 1, part 2, part 3, part 4, part 5, part 6), but, as usual, this post is (I hope!) sufficiently self-contained. We will discuss how one can have a model that works well on synthetic data without making it more realistic explicitly but doing the domain adaptation work at the level of features or model itself.

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Synthetic Data-Centric AI

In a recent series of talks and related articles, one of the most prominent AI researchers Andrew Ng pointed to the elephant in the room of artificial intelligence: the data. It is a common saying in AI that “machine learning is 80% data and 20% models”, but in practice, the vast majority of effort from both researchers and practitioners concentrates on the model part rather than the data part of AI/ML. In this article, we consider this 80/20 split in slightly more detail and discuss one possible way to advance data-centric AI research.

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Driving Model Performance with Synthetic Data VI: Real-to-Synthetic

Today we continue the series on using synthetic data to improve machine learning models.This is the sixth part of the series (Part I, Part II, Part III, Part IV, Part V). In this (relatively) short interlude I will discuss an interesting variation of GAN-based refinement: making synthetic data from real. Why would we ever want to do that if the final goal is always to make the model work on real data rather than synthetic? In this post, we will see two examples from different domains that show both why and how.

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Driving Model Performance with Synthetic Data V: Synthetic-to-Real Refinement

We continue the series on synthetic data as it is used in machine learning today. This is a fifth part of an already pretty long series (part 1, part 2, part 3, part 4), and it’s far from over, but I try to keep each post more or less self-contained. Today, however, we pick up from last time, so if you have not read Part 4 yet I suggest to go through it first. In that post, we discussed synthetic-to-real refinement for gaze estimation, which suddenly taught us a lot about modern GAN-based architectures. But eye gaze still remains a relatively small and not very variable problem, so let’s see how well synthetic data does in other computer vision applications. Again, expect a lot of GANs and at least a few formulas for the loss functions.

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Driving Model Performance with Synthetic Data IV: Gaze Estimation and GANs

With the Christmas and New Year holidays behind us, let’s continue our series on how to improve the performance of machine learning models with synthetic data. Last time, I gave a brief introduction into domain adaptation, distinguishing between its two main variations: refinement, where synthetic images are themselves changed before they are fed into model training, and model-based domain adaptation, where the training process changes to adapt to training on different domains. Today, we begin with refinement for the same special case of eye gaze estimation that kickstarted synthetic data refinement a few years ago and still remains an important success story for this approach, but then continue and extend the story of refinement to other computer vision problems. Today’s post will be more in-depth than before, so buckle up and get ready for some GANs!

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Driving Model Performance with Synthetic Data III: Domain Adaptation Overview

Today, I continue the series about different ways of improving model performance with synthetic data. We have already discussed simple augmentations in the first post and “smart” augmentations that make more complex transformations of the input in the second. Today we go on to the next sub-topic: domain adaptation. We will stay with domain adaptation for a while, and in the first post on this topic I would like to present a general overview of the field and introduce the most basic approaches to domain adaptation.

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Synthesis AI speaking at the MetaBeat conference on Oct 4th

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