The Input Image field displays the name of the input image file. Click the Select button to open the File Selection dialog box. This dialog box is used to select an existing image file for resampling.

When non-georeferenced rasters are selected in the Resampling dialog box menu, .RGR data cannot be applied properly to the raster. As a workaround, users can go to the Register menu, attach the .RGR file and press the Resample Image toggle to apply the .RGR transformation to the attached (non-georeferenced) image, but to be clearer it should be stated in the DC Help that input images in the Resample dialog box should already be georeferenced (raster header or worldfile).

The Model field displays the name of the transformation model file. If there is an active model in the Register dialog box, it displays in this field. You are prompted to save it if you have made changes since the last save.

To change the current selection, click the Select button to open the File Selection dialog box. This dialog box is used to select an existing RGR transformation model file for the resampling process.

Used to choose whether you would like to actually resample the image or simply use the transformation matrix to apply your changes.

The toggle is automatically checked when the Resampling Dialog opens, but when a Helmert, Similitude, or Affine model is selected, the toggle is automatically unchecked but remains enabled. When a Projective, Thin Plate Spline or Polynomial model is selected, the toggle is checked and disabled, since the transformation matrix does not support these models.

The Output Image field displays the name of the output image file. Click the Select button to open the File Selection dialog box. This dialog box lets you specify the name of the image file that will be created by resampling.

Use All Input Image to define the output window in such a manner that it covers the input image entirely.

Click the Input button with the All Input Image option to open the Input Image Window dialog box. The name of the input image displays in the title bar. No parameter of this dialog box can be edited. This dialog box is used only to display the actual window of the input image, as well as with content reflected in the header of this image.

Click the Output button with the All Input Image option to open the Output Window dialog box. The name of the output image displays in the title bar.

If an output image is not selected, Untitled is displayed. No window parameter (origin or dimension) of this dialog box can be edited. The dialog box is used only to display the window of the output image.

The output window is calculated automatically to cover the entire input image. Only the description of the output image and the pixel size can be entered using the Output Window dialog box. This information is used to prepare the header of the output image.

Use the Specified through Input option to define the output window through another window which is set in the input system of coordinates.

Click the Input button to specify the origin and the dimensions of the input window. The name of the input image and other information is displayed, but cannot be edited. When the output window is set through the input space, it adjusts accordingly and in such a manner that it covers the input window entirely.

Click the Output button to open the Output Window dialog box. The name of the output image displays in the title bar. If an image is not selected, Untitled is displayed. No window parameter (origin or the dimensions) of this dialog box can be edited. The dialog box is used only to display the window of the target output image. The values are calculated automatically to cover the input window entirely. Only the description of the output image and the pixel size can be entered using the Output Window dialog. This information is used to prepare the header of the output image.

Use the Warping Window option to define the output window by setting its equivalent to the warping window defined with the Warping Window dialog box.

Use the Specified in Output Space option to define the output window by setting it directly in the output space.

Click Output button with the Specified in Output Space option to open the Output Window dialog box. The name of the output image displays in the title bar. If an image is not selected, Untitled is displayed. This dialog box can be used to specify the true origin and dimensions of the output window. All other fields can also be entered or edited in order to prepare the header of the output image.

Three algorithms can be chosen through the Type option menu:

• Nearest Neighbor

• Bilinear Interpolation

• Cubic Convolution

The Nearest Neighbor algorithm uses only one input pixel. Bilinear Interpolation uses the four nearest neighbors and calculates the weighted mean. Cubic Convolution uses a four by four matrix of pixels and calculates a type of weighted mean.

The Nearest Neighbor algorithm is faster, but it can cause jagged edges or lines on the output image. Cubic Convolution usually produces the best results, but the calculation requires more time to process than the other algorithms. The Bilinear Interpolation provides a compromise in quality of output and time to process.

Three choices are available:

• Keep File Size

• Same Pixel Size

• User Defined.

Use the Pixel Size field to enter the size of pixels for the output image. With the “User Defined” option, you can enter different X and Y value .

The background color is a RGB color number used to initialize the output image file prior to resampling. Therefore, any part of the output image which is not covered by resampled pixels remains this color. You can enter the background color index into the Background Color field. You can also select the color with the color picker that pops up when you click the color button.

In Register, each file submitted for resampling has each of the resampling parameters displayed in the Job Manager group boxes. The values for each file can be viewed and edited by scrolling the individual pages. Use the Page Up or Page Down buttons to move from the current page to the previous or next page. If the Page Down button is pressed when there is not an additional page, a prompt asks you if you wish to open a new page. If you open a new page, it is created with the default parameters.

Click the Delete Page button to delete the current page and all of its parameters. This page is removed and all following pages are renumbered. If the first and only page is deleted, it remains open and the parameters are established with the default settings.

Click the Delete All button to delete all pages but the first page. The parameters of the first page are established with the default settings.

Click the Run Page button to start the resampling process according to the parameters of the current page. Before a job is run, the available disk space is checked based on the estimated file size. If the Data Compression is None and there is not enough space, the resampling job is not run and you are notified by a warning box.

While the batch program is running, a Progress window provides feedback. After the job is completed or terminated, a Report line displays the result of the processing corresponding to this page. It indicates whether the processing was successful and, if not, it declares what error or event caused it to be unsuccessful.

Click the Run All button to start the resampling process of all pages, one at a time, according to the parameters of each page. While the batch program is running, a Progress window provides feedback. For each page, a Report line displays the result of the batch processing job corresponding to this page. It indicates whether the processing of this job was successful and, if not, it declares what error or event caused it to be unsuccessful.

The Page field indicates the number of the current page and the total number of pages prepared.

For each page, a Report line displays the result of the processing that corresponds to this page. It indicates whether the processing was successful and, if not, it declares what error or event caused it to be unsuccessful.

The File menu of Resampling provides access to all necessary options to manage Resampling files (RSP files). A Resampling file is used to save a schedule of images to be resampled. It can be opened later and be batch processed.