The steps below use the file pictured here to demonstrate resampling an image to a particular resolution, or dots per inch (DPI). An image can be resampled from 50 DPI up to 3600 DPI. The higher the resolution, the more space the image will take store on disk, and the more memory will be needed both to create and view the image.
1.Select File - Print from your application; the example below uses Adobe Reader.
•In the printer field choose the Raster Image Printer 11.0 from the drop-down list of printers.
•Click the Properties... button to open the Raster Image Printer properties dialog box.
2.Click on the Image Processing tab in the Document Properties dialog to access the Resample options.
•Check the Resample check box to enable the resampling options.
•Select Resolution (DPI) from the drop-down list of resampling options.
•Enter in the resolution to resample the image to. You can enter any number between 50 DPI and 3600 DPI. For our sample page, we have checked the Lock aspect ratio check box and entered 700 DPI for the X Resolution, so 700 DPI will also be used for the Y Resolution. If you need a different resolution for the Y Resolution, uncheck the Lock aspect ratio check box and enter in the desired value.
3.As the source document is a landscape oriented document, the Orientation of the printer needs to be changed to Landscape to match. If your source document is portrait, the Orientation needs to be set to Portrait.
•On the Layout tab, select Landscape from the Orientation drop down list.
4.Click the OK button on the Document Properties dialog to save the resample options.
5.Click the OK button on the Print Dialog, or the appropriate button on your application's print dialog, to send the document to the printer.
6.Choose where to save your JPG image from the Save Image File dialog.
•Use the Save in: field to choose a folder to store your JPG image. Your Documents folder, or any folder you have chosen on the Save tab will have been selected for you by default.
•In the File name: field, enter a name for your JPG image. A default name for your file has been filled in based on the name your application used when it printed your document to the Raster Image Printer. Here we have changed the file name to ResampleJPG.
•The Save as type: drop down list can be used to change the output file type if needed. In this example we are leaving it at the default of JPEG (*.jpg).
•Click the Save button to create the file in the folder you chose.
7.Open the new JPG image in your Image viewer.
•The image is still 8.50in x 11.00in, but now has an X and Y resolution of 700 dots per inch(DPI). You can calculate this by taking the dimensions and dividing then by the DPI we requested. The result is the image size:
7700 pixels / 700 DPI = 11 inches
5950 pixels / 700 DPI = 8.5 inches