14  Camera functions

In addition to the screening functionality, the FLIR Exx-EST camera has the same thermography functions as the standard FLIR Exx camera. However, the temperature range of the FLIR Exx-EST camera is limited to 15 to 45°C (59 to 113°F), meaning that the use of the thermography functions is limited.

14.1  Thermography functions

This section provides a brief description of the thermography functions. For more detailed information, refer to the FLIR Exx user’s manual.

14.1.1  Color palettes

From the Color menu, you can change the color palette that the camera uses to display different temperatures. A different palette can make it easier to analyze an image.

14.1.2  Adjusting the temperature scale

By default, the camera continuously adjusts the image for the best image presentation.
You can also manually adjust the temperature scale to values close to the temperature of a specific object in the image. This will make it possible to detect smaller temperature differences.
  • In live mode, select icon (Temperature scale) and then icon (Auto) or icon (Manual) to enter automatic or manual image adjustment mode.
  • In preview/edit mode, manual image adjustment mode is active.
In manual mode, you can do one or more of the following:
  • To simultaneously change the temperature scale minimum and maximum limits, place your finger on the screen and move it up/down.
  • To change the minimum or the maximum limit, do the following:
  • To enhance the details of a certain point of interest in the image, touch that point on the screen. The image will be auto-adjusted based on the thermal content of the area around the touched point.

14.1.3  Image modes

The camera can capture both thermal and visual images at the same time. By choosing an image mode from the Image mode menu, you select which type of image to display on the screen.
    The camera supports the following image modes:
  • Thermal: An infrared image is displayed.
  • Thermal MSX (Multi Spectral Dynamic Imaging): The camera displays an infrared image where the edges of the objects are enhanced with visual image details.
  • Picture in picture: An infrared image frame is displayed on top of the visual image.
  • Digital camera: The visual image captured by the digital camera is displayed.

14.1.4  Measurement tools

To measure temperatures, the camera can use one or more measurement tools, e.g., a spotmeter or a box. It is possible to add/remove tools from the Measurement menu.

14.1.4.1  Measurement parameters

The measurement parameters are important for accurate measurements. In Screening mode, the camera automatically sets the appropriate parameters.
There is typically no need to change the default measurement parameters, see table below.
Object distance
1.0 m (3.3 ft.)
Atmospheric temperature
20°C (69°F)
Relative humidity
50%
Reflected temperature
20°C (69°F)
Emissivity
0.95

14.1.5  Color alarms

By using color alarms, anomalies can easily be discovered in an infrared image. The color alarm applies a contrasting color to all pixels with a temperature above, below, or between the set temperature levels. The color alarms are available on the Color menu.

14.1.6  Non-uniformity correction (NUC)

When the thermal camera displays Calibrating... it is performing what in thermography is called a ”non-uniformity correction” (NUC).
An NUC is performed automatically, for example at start-up or when the environment temperature changes.
It is also possible to perform an NUC manually, by pushing and holding down the image archive button icon for more than 2 seconds.

14.2  Saving images and video

14.2.1  General

When you save an image or record a video clip, the camera stores the image or video file on the memory card.
For instructions on how to insert the memory card, see section .

14.2.2  Saving an image

To save an image, pull the trigger.
Graphic

14.2.3  Annotating images

You can save additional information with an infrared image by using annotations. Annotations are added to the image file, and can be viewed and edited in the image archive.
  • You can set the camera to display annotation tools when an image is saved. Select icon (Settings) > Save options & storage > Add annotation after saving.
  • You can also add annotations to a saved image in the image archive.

14.2.4  Programming the camera (time-lapse)

You can program the camera to save images periodically (time-lapse).

14.3  Gallery — image and video archive

14.3.1  General

When you save an image or video clip, the camera stores the image/video file in the image archive on the memory card. You can open an image in the image archive and, for example, select another image mode, apply color alarms, and add measurement tools. You can also open and play saved video clips.
In the camera, the image archive is called Gallery. The Gallery can include one or several folders. New images and video clips will be saved to the active folder, at the top of the Gallery. You can create new folders, rename a folder, change the active folder, move files between the folders, and delete folders.
Graphic

14.3.2  Opening a saved image

14.3.3  Editing a saved image

To edit a saved image, do the following:

14.3.4  Opening a saved video clip

14.3.5  Creating a new folder

14.3.6  Renaming a folder

You can change the name of the folders in the archive. The active folder cannot be renamed.

14.3.7  Changing the active folder

New images and video clips are saved to the active folder.

To change the active folder, do the following:

14.3.8  Moving files between folders

14.3.9  Deleting a folder

You can delete a folder in the archive. The active folder cannot be deleted.

14.3.10  Deleting an image or video file

You can delete an image or video file from the image archive.

14.3.11  Deleting multiple files

You can delete multiple image and video files from the image archive.

14.3.12  Deleting all files

You can delete all image and video files from the memory card.

Follow this procedure:

14.4  About image and video files

14.4.1  File-naming convention

The default naming convention for image and video files is FLIRxxxx.jpg, where xxxx is an incremental counter.
It is also possible to save files with a prefix added to the filename, including the date and the text “IR_” for images and “MOV_” for videos. However, these files may not automatically be detected by third-party applications.
For more information, see the setting File naming format in section 15.4 Save options & storage .

14.4.1.1  Resetting the image counter

To reset the numbering of the image/video filenames, do the following:

14.4.2  Image files

The camera saves an image file that includes all thermal and visual information. This means that you can open an image file at a later time and, for example, change the color palette, apply another image mode, and add measurement tools.
The image *.jpg file is fully radiometric and saved lossless, which enables full post-processing in image analysis and reporting software from FLIR Systems. There is also a regular *.jpg component (lossy) for convenient viewing in non-FLIR Systems software (e.g., Microsoft Explorer).

14.4.3  UltraMax

UltraMax is an image enhancement feature that increases the image resolution and lowers the noise, making small objects easier to see and measure. An UltraMax image is twice as wide and high as an ordinary image.
When an UltraMax image is captured by the camera, several ordinary images are saved within the same file. Capturing all the images can take up to 1 second. To fully utilize UltraMax, the images need to be slightly different, which can be accomplished by a minute movement of the camera. You should hold the camera firmly in your hands (do not put it on a tripod), which will make these images vary just a little during the capture. Correct focus, a high-contrast scene, and a non-moving target are other conditions that help to achieve a good-quality UltraMax image.