Xgallery

User Guide

Xgallery is an image selection utility developed for use in conjunction with PointCount’99. It allows the user to view a set of images bearing some commonality in filename (see Figure 2 in PointCount’99 User Manual) and select a subset, or gallery, of images for pointcounting analysis. Xgallery creates a select file which can be viewed as a text file and contains the image numbers selected. It should be noted that Xgallery does not alter the location of images selected for the gallery. As developed for the US EPA CRMP, Xgallery is used to examine all imagery gathered from a transect in order to create a sequence of non-overlapping images.

Xgallery View Window

Open

Opens Open File dialog box. Click on any file to open. Xgallery always starts with first image in directory.

Save

Xgallery saves gallery in select file format (*.sel) in the gallery directory under Pointcount'99. Filenames are determined by the name of the directory containing the selected images

Images

• Opens dialog box showing directory of images and files selected for gallery.

• Directory column on left side shows all images. Double click on any image to view and/or start selecting.

• Included column on right side shows images previously selected for gallery. Double-click on any image to view and/or start selecting.

• Click on Exit button to return to Xgallery View Window and resume image selection.

Previous

Returns to previous set of images viewed.

Next

Advances to next set of images to select.

Using Xgallery

• Open Xgallery and select location of images. Click on the first image. Xgallery will open a box showing the first 4 images in the directory. File names are shown in yellow at the top of each image. Image sequence is shown at right.

• To select an image, click on it. (it will be outlined in red).

• Click on the Next button to continue. Xgallery will advance 2 images at a time. Click the Previous button to go back two images.

• Save file periodically.

• Images in the gallery are listed and handled in order of selection. If selections are made out of image order, it is possible to edit the select file using a text editor such as Notepad. It is important that the edited file be saved again in simple ASCII text or it will not be recognized by PointCount’99.

• If it is necessary to temporarily stop image selection, click on the Save button and close Xgallery. To resume, start the program as before and double-click on any file in the directory containing the images to be selected. Use the Images button to open the dialog box showing previously selected files. Double-click on the last file in the Included column. Click the Exit button to return to the Xgallery View Window and continue image selection.

Using Select Files With PointCount'99