Imaging

Non-contact, imaging measurement methods: Thermal imaging cameras, IR cameras, thermography; acoustic cameras; combined devices.

Imaging Methods

Common imaging methods used in industry and general measurement technology visualize a measured variable such as temperature or sound.

Thermal imaging cameras, for example, receive medium to long-wave infrared radiation in the spectral range of approximately 3.5 to 14 µm. The camera converts the thermal radiation emitted by surfaces into visible light and reproduces it as an image of the recorded objects. The image is usually displayed in false colors, whereby different palettes can usually be selected (e.g. iron palette with colors in the direction of blue for less heat radiation, red, orange, yellow and even white for a lot of heat radiation). Modern thermal imaging cameras can overlay the thermal image with a digital photo image to add photo-optical information and details.

Acoustic or sound cameras receive sound via arrays of MEMS microphones (arranged in a spiral, ring or "random" pattern, for example). The sound source is usually color-coded and superimposed on the image of an optical digital camera in order to display the position of the relevant sound source in a visually easily detectable way.