---
model: nano-banana-pro
---

User: (uploaded photo of engraved metal)

User: 
  Restore spectrogram:
  - the very light color peaks should be light gray
  - In nearly black blobs should be medium gray
  - The dark brown colors should be dark gray
  - The light brown colors should be black

Model: (updated image)

User: Near the bottom, we the gray fill should be black fill.

Model: (updated image)

User: Pure white background

Model: (updated image)

User: (Manually invert the color, no AI) 

User:
  The image is a damaged spectrogram. 
  The continuous white and gray areas originally had distinct stripes for formants.
  Restore the formants within the gray scale area.
  Do NOT change blackarea.

Model: (updated image)

User:
  Continue restoration, fix the over exposure and enhance details to reveal all the formants lines

User: (manually adjust contrast, exposure, scale, no AI)