Identify Rock Art Elements

Objective

The Identify Rock Art Elements function allows the user to identify rock art elements on the images. If there are multiple images for a panel, elements should be identified on the image showing the greatest detail for that element.

Processing

The first page displays a list of surveys that you have authority to update and have images in the identification queue.

Hyperlinks include: Area (see ShowMaps).

To continue, select a survey by clicking on the Ref Nbr of a survey.

The second page will display all of the images for the current cluster/panel in a small size. One of the small images will be labeled Active, all the others will be labeled Processed or Unprocessed. By default, DigitalRockArt makes the first small image the Active image. Elements may be identified only on the Active image.

If the current Active image is not the image you want to process, you may click on any of the images, Processed or Unprocessed, to make it the Active image. The page will be redisplayed with the selected image as the Active image.

Processed images may have elements previously identified. The previously identified elements will be indicated by element numbers on the element in the image.

"Select a Rock Art Class"
Scroll down the page to where the Active image is displayed in large size. To the right of the image are the instructions to select a Rock Art Class. If you do not understand the meaning of a Rock Art Class, click on Rock Art Class. A window will open displaying the definition of Rock Art Classes. If you do not understand the meaning of any of the rock art classes e.g. Anthropomorphic, Mash or Head, etc. scroll down to the rock art class. A definition of the rock art class and the option to view Example uses of the rock art class will be displayed. Close the window by clicking on the Close button in the upper right hand corner.

Look at the Active Image and decide which element you want to identify. Using the radio buttons to the right of the image, click the appropriate Rock Art Class. To frame and crop the element, use your mouse pointer and carefully point to two opposite corners (upper left and lower right or lower left and upper right) of the element. Left-click a corner and a "+" will display. The Rock Art Class radio button of the element at the right of the image will be cleared. Next, left-click the opposite corner of the element. A frame will display indicating the cropped area of the element.

The next three clicks indicate the natural, pecked and repecked areas. These are optional and the latter two should always be omitted for drawings or enhanced photos. The first of the three clicks should identify a pecked or painted area near the center of the element. The element number will appear and the Next Element Number field to the right of the image will be incremented. If you do not select a natural patina area with the optional click, the element number will be placed in the center of the cropped area.

The second click should be within the framing and identify a natural patina area (a "N" will appear). If there is a secondary or repecked area on the element, click a third time to identify the area (a "R" will appear). The only present use of the data collected by these last two clicks is for patina analysis.

Repeat the process for each element, always selecting the Rock Art Class first. Note the framing, "N" and "R" characters will be cleared as you start to define the next element but the element number will remain.

When you finish identifying all the elements on the image, click the Submit button at the bottom of the page. The database will be updated and the image will be labeled Processed. If all the images for the cluster/panel have been processed, the images for the next cluster/panel will display. If all the images for the cluster/panel have not been processed, the next Unprocessed image will be made the Active image.

"Next Element Number"
The application automatically increments the element number on an image. You may choose the next element number by entering the number in the Next Element Number. This may be useful if you are reworking a complex panel after deleting some elements and want to reuse the old numbers.

"Undo"
Undo will erase the last cropping of an element and the pecked, natural and repecked areas. It will also decrement the Next Element Number. This may be useful if you are not pleased with the cropping area and want to reselect new corners or change the natural, pecked and repecked areas. Undo will not work for an element once the Submit button has been clicked.

"Mark all images processed"
If all the elements on the images have been identified and there are Unprocessed images for the same cluster/panel being displayed, click the Mark all images processed check box and then the Submit button. The application will bypass processing of the Unprocessed images and display the images of the next cluster/panel.

Hyperlinks include: Rock Art Class, Image ID, RGB, Cluster, Panel (see RockArtClasses, ImageCaptions).

Buttons

• Submit: updates the data base. The next page will either show the next image of the same panel as the Active image, or if there are no more Unprocessed images, the images of the next cluster/panel will be displayed.

• Reset: resets to the page to the last values displayed by your browser.

• Menu: takes you to the Main Menu.