–Read JPEG file
set aFile to POSIX path of (choose file of type {"public.image"})
set anImage to current application’s NSImage’s alloc()’s initWithContentsOfFile:aFile

–Filter Image
set stillImageFilter to current application’s GPUImageGaussianBlurFilter’s alloc()’s init()
set aProcImg to stillImageFilter’s imageByFilteringImage:anImage

–Make New File Name
set aUUIDstr to (current application’s NSUUID’s UUID()’s UUIDString()) as string
set aPath to ((current application’s NSString’s stringWithString:aFile)’s stringByDeletingLastPathComponent()’s stringByAppendingPathComponent:aUUIDstr)’s stringByAppendingPathExtension:"png"
set sRes to saveNSImageAtPathAsPNG(aProcImg, aPath as string) of me

–NSImageを指定パスにPNG形式で保存
on saveNSImageAtPathAsPNG(anImage, outPath)
　　set imageRep to anImage’s TIFFRepresentation()
　　set aRawimg to current application’s NSBitmapImageRep’s imageRepWithData:imageRep
　　
　　set pathString to current application’s NSString’s stringWithString:outPath
　　set newPath to pathString’s stringByExpandingTildeInPath()
　　
　　set myNewImageData to (aRawimg’s representationUsingType:(current application’s NSPNGFileType) |properties|:(missing value))
　　set aRes to (myNewImageData’s writeToFile:newPath atomically:true) as boolean
　　
　　return aRes –true/false
end saveNSImageAtPathAsPNG