8/19/2019 Batch Gray Scale

http://slidepdf.com/reader/full/batch-gray-scale 1/5

Batch Grayscale

Converting Many Files

8/19/2019 Batch Gray Scale

http://slidepdf.com/reader/full/batch-gray-scale 2/5

Convert Images to Grayscale

• Convert an image to grayscale

8/19/2019 Batch Gray Scale

http://slidepdf.com/reader/full/batch-gray-scale 3/5

Convert Images to Grayscale

• Convert an image to grayscale

• Why?

• Printing: cheaper, sometimes required

• Faster, easier for other processing

• For one image: might use image editor 

8/19/2019 Batch Gray Scale

http://slidepdf.com/reader/full/batch-gray-scale 4/5

Convert Images to Grayscale

• What about many?

• What if we had 1000 images?

8/19/2019 Batch Gray Scale

http://slidepdf.com/reader/full/batch-gray-scale 5/5

• Task: convert many images to grayscale

• User selects images, from 1 to 1000

• Convert each to grayscale

• Save converted, new images as files

• Add “grey-“ prefix to original file name

Task: Convert Many Images

Ask user to pick filesIterate over them

1

Convert one imageto grayscale

2

Combine:Convert many

3

Save results

4