Infrared Spectrum Curve Extraction

Upload Spectrum Image

Crop & Set Parameters

Step 2 Tips
1) The crop box should cover the full X-axis range (left end to right end).
2) Drag the yellow line in the crop box to align with the 2000 tick; split_pixel_x is captured automatically.

Background Preprocessing

Step 3 Tips
• Drag multiple boxes on representative background areas (avoid the target curve).
• Set threshold: lower is strict, higher removes more similar shades.
• Choose output mode (Original or Grayscale) here, then click Apply and Continue.

Extract Curve

Step 4 Tips
• Auto: try automatic detection first on the preprocessed image from Step 3.
• Color Pick: sample 3-8 points on the curve; tolerance 15-25 is strict, 25-40 is common, 40-60 tolerates color drift but adds noise.
• Manual Trace: vertical only (most stable). Mark multiple guide points along the curve.

Auto Detection Result

System automatically tried to detect curves using grayscale analysis. Check the result below.