Sushanth

Blog

Projects, paper reviews, and CV/ML concepts which I like to summarize for my own future reference.

Computer Vision

Paper Review: Reconstructing Dynamic Scenes by Querying Points
Computer Vision

Paper Review: Reconstructing Dynamic Scenes by Querying Points

A new shape for reconstruction networks. Encode the video once, then ask a lightweight decoder about one point at a time. D4RT in depth, Point4D in brief, and how you train one of these.

Sep 12, 2026
Paper Review: Handling High FOV Cameras in Vision Networks
Computer Vision

Paper Review: Handling High FOV Cameras in Vision Networks

How modern neural nets handle fisheye distortion and metric scale

Jul 26, 2026
Paper Review: ConvNext
Computer Vision

Paper Review: ConvNext

Modernizing CNNs with Transformer design choices

Jan 04, 2024

Generative Models

VAEs to Latent Diffusion
Generative Models

VAEs to Latent Diffusion

A different ELBO with the same Jensen trick, then merging it with the VAE

Mar 30, 2025
The Reparameterization Trick
Generative Models

The Reparameterization Trick

Putting a stochastic latent variable inside a neural network

Mar 30, 2025

Reinforcement Learning

Crafting Neural Nets for RL
Reinforcement Learning

Crafting Neural Nets for RL

RL Intro and Imitation Learning

Mar 29, 2025
Policy Gradients
Reinforcement Learning

Policy Gradients

Learning by trial and error

Mar 28, 2025
Actor-Critic Methods
Reinforcement Learning

Actor-Critic Methods

Learning what's good, then doing more of it

Mar 27, 2025

Appendix

VAE and ELBO
Appendix

VAE and ELBO

Bounding $p(x)$ with the Evidence Lower BOund

Mar 30, 2025
Camera Models
Appendix

Camera Models

Forward and inverse projection, distortion models

Jan 10, 2024