# Page Not Found

The URL `build-your-own-autonomous-drone-part-4-stereo-depth-estimation-octomap-and-path-planning` does not exist. This page may have been moved, renamed, or deleted.

## Suggested Pages

You may be looking for one of the following:
- [Autonomous Drone Software E04: Depth Estimation, Octomap and Path Planning](https://gaas.gitbook.io/guide/software-realization-build-your-own-autonomous-drone/build-your-own-autonomous-drone-part-4-stereo-depth-estimation-octomap-and-path-planning.md)
- [Autonomous Drone Hardware E01: Building a Drone from Scratch](https://gaas.gitbook.io/guide/build-your-own-autonomous-drone-hardware-implementation/build-drone-from-scratch.md)
- [Autonomous Drone Software E05: Vision-Based Auto-Landing](https://gaas.gitbook.io/guide/software-realization-build-your-own-autonomous-drone/build-your-own-autonomous-drone-part-5-vision-based-auto-landing.md)
- [Autonomous Drone Hardware E02: Step-by-Step Flight Control Setup with QGroundControl](https://gaas.gitbook.io/guide/build-your-own-autonomous-drone-hardware-implementation/autonomous-drone-hardware-e02-step-by-step-pid-tuning-with-qgroundcontrol.md)
- [Autonomous Drone Software E01: OFFBOARD Control and Gazebo Simulation](https://gaas.gitbook.io/guide/software-realization-build-your-own-autonomous-drone/build-your-own-autonomous-drone-e01-offboard-control-and-gazebo-simulation.md)

## How to find the correct page

If the exact page cannot be found, you can still retrieve the information using the documentation query interface.

### Option 1 — Ask a question (recommended)

Perform an HTTP GET request on the documentation index with the `ask` parameter:

```
GET https://gaas.gitbook.io/guide/software-realization-build-your-own-autonomous-drone/build-your-own-autonomous-drone-part-4-stereo-depth-estimation-octomap-and-path-planning.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

### Option 2 — Browse the documentation index

Full index: https://gaas.gitbook.io/guide/sitemap.md

Use this to discover valid page paths or navigate the documentation structure.

### Option 3 — Retrieve the full documentation corpus

Full export: https://gaas.gitbook.io/guide/llms-full.txt

Use this to access all content at once and perform your own parsing or retrieval. It will be more expensive.

## Tips for requesting documentation

Prefer `.md` URLs for structured content, append `.md` to URLs (e.g., `/guide/software-realization-build-your-own-autonomous-drone/build-your-own-autonomous-drone-part-4-stereo-depth-estimation-octomap-and-path-planning.md`).

You may also use `Accept: text/markdown` header for content negotiation.