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Apochron decodes autostereograms back into depth maps. Here's how to get the best results:

📏 Pattern Width Settings

Min Pattern Width: Controls detection of nearby (close) depth levels

• Too high → Nearby levels get corrupted
• Too low → Slower processing, results look muted
• Sweet spot: Usually 45-50 pixels

Max Pattern Width: Controls detection of distant (far) depth levels

• Too low → Far levels get corrupted
• Too high → Slower processing, results look washed out
• Sweet spot: Usually 90-100 pixels

Range too wide: If max - min is too large (> 60), depth levels wash out or muted and blend together. Keep them reasonably close for greatest contrast!

🔧 Cleanup Parameters

Occlusion Passes: Number of times to clean up vertical edges

• 0 = No cleanup (raw output, noisy edges)
• 2 = Good balance (recommended)
• 5 = Maximum cleanup (may look blocky)

Cleanup Window Size: How many neighboring pixels to consider

• 1-2 = Gentle cleanup (preserves detail)
• 3 = Good balance (recommended)
• 4-5 = Aggressive cleanup (cleaner but may blur small features)

💡 Troubleshooting

Depth map looks washed out:

• Pattern width range is too wide - narrow the gap between min and max
• Try increasing Contrast slider

Nearby levels corrupted:

• Min Pattern Width is too high

Background and far levels corrupted:

• Max Pattern Width is too low

Vertical edges are noisy:

• Increase Occlusion Passes to 3-4
• Increase Cleanup Window Size to 4

🎯 Quick Start Guide

1. Load an autostereogram image

2. Click "Decode Depth Map" with default settings

3. If nearby levels look bad → lower Min Pattern Width

4. If far levels look bad → raise Max Pattern Width

5. If edges are noisy → increase Occlusion Passes

6. Download your depth map when satisfied!

Pro Tip: Most autostereograms use pattern widths between 47-97 pixels. Start there and adjust based on what you see!