LuaScript

The path to a Lua script that returns the rotation to apply to the input image, in degrees, clockwise.

The Lua script must define a function named getAngle, which must return the angle. HPE Media Server can rotate images in 90-degree increments, so all other angles are rounded.

The following is an example Lua script that you could use to rotate images based on the angle of a face detected in the image, or text detected in the image. In this example, the angles returned are negative, so the rotation is anticlockwise.

function getAngle(record)
  if (record.OCRResultAndImage) then
     return -record.OCRResultAndImage.angle
  elseif (record.FaceResultAndImage) then
     return -record.FaceResultAndImage.face.ellipse.angle
  elseif (record.FaceRecognitionResultAndImage) then
     return -record.FaceRecognitionResultAndImage.face.ellipse.angle
  elseif (record.DemographicsResultAndImage) then
     return -record.DemographicsResultAndImage.face.ellipse.angle
  elseif (record.FaceStateResultAndImage) then
     return -record.FaceStateResultAndImage.face.ellipse.angle
  end
  
  return 0
end
Type: String
Default:  
Required: Required unless you set Angle
Configuration Section: TaskName
Example: LuaScript=rotate.lua
See Also: Angle

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