{
  "testedOn": "2026-10-04",
  "timeZone": "Asia/Shanghai",
  "input": {
    "url": "people-before.png",
    "width": 275,
    "height": 401
  },
  "output": {
    "url": "people-after.png",
    "width": 275,
    "height": 401
  },
  "mask": "people-mask.png",
  "outsideChangedPixels": 0,
  "sourcePeople": 5,
  "resultPeople": 4,
  "method": "Compare decoded RGBA pixel arrays where the saved mask is below 128; the final image is composited using source pixels outside that mask.",
  "sourceCredit": "NASA",
  "sourcePage": "https://chandra.si.edu/resources/illustrations/astronauts/index.html",
  "note": "Demonstration edit without NASA endorsement. Generated background is not evidence of the hidden original scene."
}