# HectorScope

HectorScope is a **3D waveform visualisation** tool that displays luma and chroma information together in a three-dimensional space. Named after its creator **Hector Berebi** — a working colourist and educator who teaches colour theory through historical and perceptual framings — it provides a unique perspective on your video signal.

Where a classic waveform collapses the image to 2D (spatial position × level) and a vectorscope collapses it to 2D chroma (Cb × Cr), HectorScope plots all three of **Y' (luma)**, **Cb**, and **Cr** at once. Each pixel becomes a point in a 3D cube that you can rotate interactively. Patterns that are hidden in a 2D projection — a coloured cast that only affects shadows, or a chroma outlier that sits inside the convex hull of the vectorscope trace — become obvious when you rotate the cube.

<figure><img src="/files/veHfVDrgDhheHABCJAX1" alt=""><figcaption><p>HectorScope — 3D waveform visualisation</p></figcaption></figure>

## Overview

Unlike traditional 2D waveforms, HectorScope renders your signal in 3D space, allowing you to:

* Visualise the relationship between luma and chroma together, not in separate scopes
* Identify colour distributions that are hidden in 2D projections
* Examine shadow, midtone, and highlight regions from multiple angles

## Interface

The scope displays a 3D representation of your video signal that can be rotated and navigated interactively.

### Navigation

| Action     | Control           |
| ---------- | ----------------- |
| Rotate     | Click and drag    |
| Zoom       | Mouse wheel       |
| Pan        | Hold Shift + drag |
| Reset view | Double-click      |

## Settings

Access scope settings via the hamburger menu (☰) or right-click on the scope.

### Display Options

| Setting     | Description                       | Default |
| ----------- | --------------------------------- | ------- |
| Point Size  | Size of individual sample points  | Auto    |
| Brightness  | Overall brightness of the display | 1.0     |
| Color Model | RGB or YCbCr color representation | RGB     |

### Rotation Controls

Per-axis rotation controls allow precise orientation of the 3D view:

| Setting    | Description       |
| ---------- | ----------------- |
| X Rotation | Tilt up/down      |
| Y Rotation | Rotate left/right |
| Z Rotation | Roll              |

<figure><img src="/files/jWIqvJ8ASP6ZVzZg8l8J" alt=""><figcaption><p>HectorScope rotated to inspect shadow detail</p></figcaption></figure>

## Use Cases

### Shadow Detail Analysis

Rotate the view to isolate shadow regions and examine noise or color contamination in dark areas.

### Highlight Rolloff

View the transition from midtones to highlights to ensure smooth rolloff without clipping.

### Color Balance

Examine the overall distribution of colors to identify unwanted color casts across tonal ranges.

## Tips

* Use in combination with the standard Waveform for comprehensive analysis
* Double-click to reset to the default view when navigating becomes disorienting
* Reduce point size for dense signals to see structure more clearly

## Related Scopes

* [Waveform](/nobe-omniscope/scopes/waveform.md) - Traditional 2D waveform view
* [3D Color Cube](/nobe-omniscope/scopes/3d-color-cube.md) - 3D color space visualization
* [Vectorscope](/nobe-omniscope/scopes/vectorscope.md) - 2D chroma analysis


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