---
title: "Reconstructed Slides: Evals 101 — Doug Guthrie, Braintrust"
category: "slides"
video_id: "bk0TmxoZlUY"
sourceLabels: ["Cropped public YouTube video frames", "Local OpenCV slide-region detection", "Local RapidOCR"]
---

# Reconstructed Slides: Evals 101 — Doug Guthrie, Braintrust

## Source Video
[Evals 101 — Doug Guthrie, Braintrust](https://www.youtube.com/watch?v=bk0TmxoZlUY)

## Method
This deck is reconstructed from the existing video frame captures by detecting likely slide regions with OpenCV, cropping/upscaling those regions, deduplicating similar crops, and OCRing the cropped slide images locally. It is a cleaner companion to the full-stage frame deck.

## Reconstructed Slides
![[assets/reconstructed-slides/bk0TmxoZlUY/slide-001.jpg]]

- Source frame: `slide-001.jpg`
- Crop: `full` `[0, 0, 960, 540]` score `160.14`
![[assets/reconstructed-slides/bk0TmxoZlUY/slide-002.jpg]]

- Source frame: `slide-002.jpg`
- Crop: `full` `[0, 0, 960, 540]` score `175.6`
![[assets/reconstructed-slides/bk0TmxoZlUY/slide-003.jpg]]

- Source frame: `slide-003.jpg`
- Crop: `full` `[0, 0, 960, 540]` score `156.15`
![[assets/reconstructed-slides/bk0TmxoZlUY/slide-004.jpg]]

- Source frame: `slide-004.jpg`
- Crop: `full` `[0, 0, 960, 540]` score `161.18`
![[assets/reconstructed-slides/bk0TmxoZlUY/slide-005.jpg]]

- Source frame: `slide-005.jpg`
- Crop: `full` `[0, 0, 960, 540]` score `160.99`
![[assets/reconstructed-slides/bk0TmxoZlUY/slide-006.jpg]]

- Source frame: `slide-006.jpg`
- Crop: `full` `[0, 0, 960, 540]` score `166.12`
![[assets/reconstructed-slides/bk0TmxoZlUY/slide-007.jpg]]

- Source frame: `slide-007.jpg`
- Crop: `full` `[0, 0, 960, 540]` score `166.63`
![[assets/reconstructed-slides/bk0TmxoZlUY/slide-008.jpg]]

- Source frame: `slide-008.jpg`
- Crop: `full` `[0, 0, 960, 540]` score `160.93`
![[assets/reconstructed-slides/bk0TmxoZlUY/slide-009.jpg]]

- Source frame: `slide-009.jpg`
- Crop: `full` `[0, 0, 960, 540]` score `160.26`
![[assets/reconstructed-slides/bk0TmxoZlUY/slide-010.jpg]]

- Source frame: `slide-010.jpg`
- Crop: `full` `[0, 0, 960, 540]` score `157.83`
![[assets/reconstructed-slides/bk0TmxoZlUY/slide-011.jpg]]

- Source frame: `slide-011.jpg`
- Crop: `full` `[0, 0, 960, 540]` score `160.71`
![[assets/reconstructed-slides/bk0TmxoZlUY/slide-012.jpg]]

- Source frame: `slide-012.jpg`
- Crop: `full` `[0, 0, 960, 540]` score `158.92`
![[assets/reconstructed-slides/bk0TmxoZlUY/slide-013.jpg]]

- Source frame: `slide-013.jpg`
- Crop: `full` `[0, 0, 960, 540]` score `161.08`
![[assets/reconstructed-slides/bk0TmxoZlUY/slide-014.jpg]]

- Source frame: `slide-014.jpg`
- Crop: `full` `[0, 0, 960, 540]` score `156.42`
![[assets/reconstructed-slides/bk0TmxoZlUY/slide-015.jpg]]

- Source frame: `slide-015.jpg`
- Crop: `full` `[0, 0, 960, 540]` score `166.21`
![[assets/reconstructed-slides/bk0TmxoZlUY/slide-016.jpg]]

- Source frame: `slide-016.jpg`
- Crop: `full` `[0, 0, 960, 540]` score `158.59`
![[assets/reconstructed-slides/bk0TmxoZlUY/slide-017.jpg]]

- Source frame: `slide-017.jpg`
- Crop: `full` `[0, 0, 960, 540]` score `166.16`
![[assets/reconstructed-slides/bk0TmxoZlUY/slide-018.jpg]]

- Source frame: `slide-018.jpg`
- Crop: `full` `[0, 0, 960, 540]` score `160.09`
![[assets/reconstructed-slides/bk0TmxoZlUY/slide-019.jpg]]

- Source frame: `slide-019.jpg`
- Crop: `full` `[0, 0, 960, 540]` score `159.57`
![[assets/reconstructed-slides/bk0TmxoZlUY/slide-020.jpg]]

- Source frame: `slide-020.jpg`
- Crop: `full` `[0, 0, 960, 540]` score `176.66`
![[assets/reconstructed-slides/bk0TmxoZlUY/slide-021.jpg]]

- Source frame: `slide-021.jpg`
- Crop: `full` `[0, 0, 960, 540]` score `161.22`
![[assets/reconstructed-slides/bk0TmxoZlUY/slide-022.jpg]]

- Source frame: `slide-022.jpg`
- Crop: `full` `[0, 0, 960, 540]` score `176.18`
![[assets/reconstructed-slides/bk0TmxoZlUY/slide-023.jpg]]

- Source frame: `slide-023.jpg`
- Crop: `full` `[0, 0, 960, 540]` score `158.67`
![[assets/reconstructed-slides/bk0TmxoZlUY/slide-024.jpg]]

- Source frame: `slide-024.jpg`
- Crop: `full` `[0, 0, 960, 540]` score `159.02`
## Dense Scene-Detected Slide Candidates
- [[youtube-bk0TmxoZlUY-dense-slides]]