It's not clear what you're trying to do, but this uses some of your code and then applies another filter to scale the image.

Applescript:

use framework "Foundation"
use framework "AppKit"
use framework "CoreImage"
use scripting additions

set theImage to (choose file)
set outPath to POSIX path of ((path to desktop as text) & "Test.tif")

set theCIImage to current application's CIImage's imageWithContentsOfURL:theImage

-- CIFilter Protocol
set theImageFilter to current application's CIFilter's filterWithName:"CIBokehBlur"
theImageFilter's setValue:theCIImage forKey:(current application's kCIInputImageKey)
theImageFilter's setValue:30 forKey:"inputRadius" --> Distance: min 0 max 500
theImageFilter's setValue:1 forKey:"inputRingAmount" --> Scalar: min 0 max 1
theImageFilter's setValue:7 forKey:"inputRingSize" --> Scalar: min 0
theImageFilter's setValue:0 forKey:"inputSoftness" --> Scalar: min 0 max 10
set theCIImage to theImageFilter's valueForKey:(current application's kCIOutputImageKey)

-- get the rectangle containing the image
set {{x, y}, {oldWidth, oldHeight}} to theCIImage's extent()
-- define the new size
set theWidth to 500 -- points
set theScale to theWidth / oldWidth

set theCIFilter to (current application's CIFilter's filterWithName:"CILanczosScaleTransform" withInputParameters:{inputScale:theScale, inputImage:theCIImage})
set theCIImage to (theCIFilter's valueForKey:(current application's kCIOutputImageKey))

-- make image rep and save tiff
set imageRep to current application's NSBitmapImageRep's alloc()'s initWithCIImage:theCIImage
set imageData to imageRep's TIFFRepresentation()
imageData's writeToFile:outPath atomically:true

Shane, with your reference code I use CISepiaTone.
And the only thing I did was to change the CIFilers Protocol.

This is so cool, thanks again Shane.

Applescript:

use framework "Foundation"
use framework "AppKit"
use framework "CoreImage"
use scripting additions

set theImage to (choose file)
set outPath to POSIX path of ((path to desktop as text) & "Test.tif")

set theCIImage to current application's CIImage's imageWithContentsOfURL:theImage

-- CIFilter Protocol
set theImageFilter to current application's CIFilter's filterWithName:"CISepiaTone"
theImageFilter's setValue:theCIImage forKey:(current application's kCIInputImageKey)
theImageFilter's setValue:0.3 forKey:"inputIntensity"
set theCIImage to theImageFilter's valueForKey:(current application's kCIOutputImageKey)

-- get the rectangle containing the image
set {{x, y}, {oldWidth, oldHeight}} to theCIImage's extent()
-- define the new size
set theWidth to 680 -- points
set theScale to theWidth / oldWidth

set theCIFilter to (current application's CIFilter's filterWithName:"CILanczosScaleTransform" withInputParameters:{inputScale:theScale, inputImage:theCIImage})
set theCIImage to (theCIFilter's valueForKey:(current application's kCIOutputImageKey))

-- make image rep and save tiff
set imageRep to current application's NSBitmapImageRep's alloc()'s initWithCIImage:theCIImage
set imageData to imageRep's TIFFRepresentation()
imageData's writeToFile:outPath atomically:true

Made some quick handlers of your code if someone else like to build a library of CIFilters.

Sometimes its not clear how to convert Objective-C code to ASObjC but with your help
I learn so much so thank you, and I agree the Bridge TV Show from Sweden is great...

But now I read this.
https://developer.apple.com/documentati … meter_keys

Applescript:

-- CIFilters Handlers

-- CIFilter SepiaTone Protocol
on ciFilterSepiaTone(inputImageData, inputIntensityValue)
   set theImageFilter to current application's CIFilter's filterWithName:"CISepiaTone"
   theImageFilter's setValue:inputImageData forKey:(current application's kCIInputImageKey)
   theImageFilter's setValue:inputIntensityValue forKey:"inputIntensity" --> range:(0.0 - 1.0)
   set theCIImage to theImageFilter's valueForKey:(current application's kCIOutputImageKey)
end ciFilterSepiaTone

-- CIFilter LanczosScaleTransform Protocol
on ciFilterLanczosScaleTransform(inputImageData, inputScaleValue)
   set theCIFilter to (current application's CIFilter's filterWithName:"CILanczosScaleTransform" withInputParameters:{inputScale:inputScaleValue, inputImage:inputImageData})
   set theCIImage to (theCIFilter's valueForKey:(current application's kCIOutputImageKey))
end ciFilterLanczosScaleTransform

-- Image format TIFF
on saveImageDataToTiff(inputData, outPath)
   set imageRep to current application's NSBitmapImageRep's alloc()'s initWithCIImage:inputData
   set imageData to imageRep's TIFFRepresentation()
   imageData's writeToFile:outPath atomically:true
end saveImageDataToTiff