Wednesday, February 4, 2009

Batch Processing with Adobe Photoshop

By David Peters

If you are not quite familiar with Photoshop, this program has these wonderful little features called Actions. These Actions have many different uses from creating remarkable effects to maximizing your productivity and of course they can always be counted on to handle the common and tiresome tasks that are nothing more than time consuming.

I recently experienced the joy of using Batch Processing. I'm a dedicated designer and love what I do however I wasn't going to spend hours manipulating the Hue/Saturation for every single image for my forum when I had much better things to do. What I found was the great tool of Batch Processing.

When creating an action, you need it to produce the same one result. Let's imagine an example of changing the Hue/Saturation in 100+ photos from bright red to a rose tone. You might need an action to serve another purpose, but let's stick to this Hue/Saturation idea for this tutorial. Now pick a small image such as an icon and we'll continue.

Now go to Window - Actions and make sure it that it is checked. If it is, you should see a tab in the Layers Palette labeled Actions.

Click on the arrow button to enter the Actions menu and then "new Set." This will create a folder for your newly created action (the folder is not mandatory, but it does help with organization.)

Go back to the Actions menu and select "New Action." I'll give you three guesses as to what this does. Now, before recording an action you need to figure out the steps you'll need to take and the order in which you'll need to take them. Since this is a pretty simple action you can do this is your sleep eventually.

Now for the recording part. There will be a small circle icon between the square and the triangle at the bottom of the palette that you will need to click. Now Photoshop will record everything you do until the end of the Action. If you have an error, simply stop the Action by pushing the square icon and go back to your last step taken.

For my action, the first thing I need to do is change the Mode of the image to RGB, since .gif files are saved in Index mode which don't take too kindly to colorization. So with the action recording, go to Image - Mode - RGB. Now take a look at your Actions palette, it should look like this:

Next, we'll have to strip the image of it's current color to make adding our (my) own color easier to apply, so go to Image - Adjustment - Desaturate.

There will be a naked grey image left to which we need to add some color. While still recording your action, go to Image - Adjustments - Hue/Saturation. I keep the rose color settings saved in a .ahu (Hue/Saturation) file already so all I have to do is press Load and select Rose.ahu, but you can achieve this color by using the sliders.

Finally, we save it for the web. Check that your action is still recording and go to File - Save For the Web and set your file type and optimization settings. I use the customary GIF settings. Choose the destination directory and save.

Now you can press the square button on the actions tab and stop recording. To put your newly created action into action, we'll need to do a Batch Process. A batch process will take all the images in a specified directory and apply whatever changes were recorded in the action.

Begin by going to File -Automate - Batch and make sure the name of the Action Set you just made is in the first dropdown list and the name of the Action is in the second. Set the third dropdown box (next to Source) to Folder and use the Choose button to find your duplicated or created folder of images. For destination, you can leave it set to it's default "None" to have the action applied and saved in the source folder, or save the "actionized" images into a separate folder. Click OK once you have everything set to your liking..

The hard part of the job is now done for you! All that is left is to relax and watch your pictures color themselves thanks to Actions and Batch Processing. - 17943

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