Camera Point

Learn how the Camera point can be used and see it in action with the sample projects.

What is the Camera point?

The Camera point allows you to select photos from your photo library or capture new photos to be stored in a session. When used in conjunction with a Sketch point , you can draw sketches to add even more information to your photos.

Key Features

  • Can be used with the Sketch point to add sketches to photos.
  • Supports selecting existing photos from the device's photo library.
  • Supports capturing new photos and saving them directly to a session.
  • Automatically geo-tag photos to store the location where photos are taken.
  • Stores image metadata including camera make, model, date of capture and more.
  • Can output metadata to other points using dynamic references for post-processing and reports.

Geo-Tagging Photos

Modern smartphones can be configured to automatically geo-tag photos which captures the geographical location of where a photo was taken. The camera point captures this information and stores it within the photo, allowing you to view this information simply by downloading the photo and viewing the photo's details. On a computer running a Windows operating system this can be done by downloading the photo from the portal, right clicking on the photo and selecting properties. Select the details tab to view all of the metadata for the photo, including the Latitude , Longitude and Altitude .

Requirements

In order for geo-tagging information to be captured, the device's camera application will need to be configured to enable geo-tagging and allow location services. When a photo is taken, the device will need to be in an environment where a GPS location can be captured, otherwise no geo-tag information will be stored. If a GPS location is required, it is recommended to add validation to ensure a location is captured, see adding validation to GPS coordinates .

Adding Validation to GPS Coordinates

To ensure GPS information is captured for a camera point, you can use dynamic references to output the captured GPS latitude and longitude to Edit points and add validation to ensure the Edit points have a value. This can be done by following the steps below: For this example, the project contains an existing Camera point with the ID Name of CameraPoint .

  • Add an Edit point with ID Name set to CameraPoint.lat . In the Edit point's properties ensure the Read only value is enabled to prevent user's from manually entering coordinates.
  • Add a second Edit point with ID Name set to CameraPoint.long . In the Edit point's properties ensure the Read only value is enabled to prevent user's from manually entering coordinates.
  • Add a Math point with any ID, for this example it will be MathLatLong .
  • Set the Math point's expression to:
    ((CameraPoint.lat > 0 | CameraPoint.lat < 0) & (CameraPoint.long > 0 | CameraPoint.long < 0)) ? 1 : 0
    This expression will check the latitude and longitude values to ensure there is a valid coordinate. If there is, the Math point's value will be 1 otherwise it will be 0.
  • Open the project's properties window and in the Advanced tab tab enable the Only allow sessions to be sent when the following point has the specified value .
  • Select the point MathLatLong and set Valid when value equals to 1 .

This will ensure that a session cannot be completed until there are valid GPS Coordinates captured for the camera point. For a working example of this validation, download or import the sample project .

Dynamic References

You can configure another point to obtain information from a camera point by setting the point's ID to a dynamic reference. These dynamic references can be useful for extracting information for reports or for validation.

For example, if a project has a Camera point with the ID set as CameraPoint you can extract the GPS Latitude by adding an Edit point with the ID set as CameraPoint.lat . See the table below for the full list of available options or download the sample project to see how these dynamic references can be used in a project.

Value Point ID Reference
Latitude Decimal CameraPointID.lat
Longitude Decimal CameraPointID.long
File Name CameraPointID.filename
Image Metadata CameraPointID.metadata

Haven’t installed the Mobile Data Anywhere Designer?
You can get started by downloading the Mobile Data Anywhere Designer below or read through our Quick Start Guide to learn how to get started with Mobile Data Anywhere.

Configuration and Settings

The Camera point can be configured in the Mobile Data Anywhere Designer to customise the capture method and display options. Below is an example of the properties window for a Camera point, opened in the Mobile Data Anywhere Designer.


Camera point properties

When the Camera Point is Tapped

This setting controls what happens when the camera point is tapped for the first time. It can be configured with any of the following options:

  • Display the options to capture a new photo with the camera, photo library or the latest photo in the photo library.

    This is the default option and will display all options to the user so that they can choose between using the camera, photo library or automatically pick the latest photo from their photo library.

  • Automatically launch the Camera

    The camera will be opened allowing the user to quickly take a new photo without having to select the camera option.

  • Automatically launch the photo library

    The photo library will be opened allowing the user to quickly select an existing photo from their photo library without having to select the photo library option.

  • Automatically attach the most recent photo from the photo library

    The most recent photo will be automatically selected from the photo library.

Capture image size

This setting allows you to set the desired size of the image when saved to the session. 640x480 is the recommended size for best presentation on A4 size reports. Larger resolutions may be required for more detailed reports.

Using Camera Point on a Mobile Device

On the mobile device, a Camera point will display a thumbnail within the session which will provide instructions to Tap to take a photo . Once a photo has been taken or selected from the device's photo library, the photo will display within the thumbnail, in the session. The size of the thumbnail is determined using the point's properties that are configured in the Mobile Data Anywhere Designer.



Sample Projects

The following sample project demonstrates how a Camera point can be added to your projects along with dynamic references to capture geo-tag and photo metadata.


Sample Projects
You can download the sample files for this tutorial or import the projects directly into your account.