Video & Stabilization
Analyzer’s Video & Stabilization module provides all the hardware, software, and charts you need to evaluate video quality stability in changing environments; motion-related issues; overall video quality; and to perform stabilization testing. Further, you can analyze optical and digital stabilization for photo and video.
- Photo stabilization
- Video stabilization
- Texture and edge acutance convergence
- Zoom stability
- Visual noise
- Color convergence
- Spatial and temporal noise
- AE, AWB convergence
AZ Video is a complete set of video measurements with easy visualization. In a very simple way, the user is able to compute video spatial and temporal metrics available in Analyzer. The measurement is displayed in a comprehensive and intuitive way and is «synchronized » with a preview of the ROI of the video.
Visual Noise chart
The Visual Noise chart is composed of seven large gray patches designed specifically to measure visual noise for video. These measurements complement those taken using the gray chart. You can also use this chart to evaluate various important video quality metrics related to temporal analysis, spatial analysis and noise chromaticity.
Dynamic Lighting System (DLS)
Hand-in-glove with the Automated Lighting System (ALS), this lighting setup takes automation one step further by providing instant lighting intensity changes, thus allowing camera engineers to swiftly perform image quality tests under a multitude of lighting conditions without wasting any time. The DLS is equipped with LED lamps that complement the ALS’s tungsten and fluorescent lighting, and also provides controllable ultra-low-light conditions below 1 lux. You can integrate the Dynamic Lighting system within an automated workflow.
The ColorChecker chart is instrumental for video color measurements. Whether it pertains to skin tones in video calls or scenery in landscape panning shots, color is an integral part of video quality. You can use this chart to evaluate white balance amplitude and intensity as well as color rendering amplitude and intensity. (Also used with Photo module.)
H860 Hexapod Shaker
Camera and subject motion are two of the hardest aspects of video quality to measure in an accurate and repeatable way. Analyzer’s Video and Stabilization module works seamlessly with our purpose-built hexapod shake table and control software to ensure that you’re testing your device against different kinds of camera movement.
This high-precision shaking platform for image stabilization testing provides repeatable motions that simulate real life movements.(Also used with Selfie module.)
Dead Leaves chart
Rapidly changing lighting conditions represent a challenge for the Autoexposure (AE) and Auto White Balance (AWB) features of video capture devices. Analyzer’s Video module uses an included Dead Leaves texture chart to evaluate how quickly and accurately your AE & AWB respond to changes in lighting. The module also measures sharpness and texture-preservation at the same time, for a more efficient testing workflow.
IEEE-CPIQ compliant chart for evaluating texture preservation and noise. (Also used with Autofocus & Timing and Photo modules.)
Consistency of video performance during recording is critical for producing quality results. The Video & Stabilization module comprises an extensive set of tests to perform when recording a uniform background to help you characterize your camera’s video stability. These tests include measuring the variation in exposure and white balance, as well as color shifts, and temporal and spatial noise, including row and column noise. You can also use the gray chart to evaluate such other video metrics as exposure stability and convergence. To facilitate easy measurement, the module automatically handles a variety of input formats, including RAW, AVI, TIFF, JPEG, AE, AWB, as well as handling color rendering, convergence, and stability metrics.
This uniform gray-colored chart helps with exposure analysis, as well as with evaluating shading, defective photosites, flash, and video noise. (Also used with the Optics module fisheye extension.)
Automated Lighting System (ALS)
A multi-illuminant (1 tungsten + 3 fluorescent) lighting system provides uniform lighting between 1 and 1000 lux over a large space. An illuminance feedback loop automatically stabilizes light levels, and the entire system is computer controlled so that you can program your own lighting scenarios, including color temperature. (Also used with Autofocus & Timing, Perceptual Analysis, Selfie, and Photo modules.)
The effectiveness of Image stabilization systems—whether optical or electronic—is typically measured in stops, and our Video & Stabilization module follows the CIPA protocol for this test. Combined with our optional shaking platform, these tests are not only simple to complete, but very repeatable and operator-independent. The module can also measure the linear effect of motion blur.
Measuring video stabilization is a more complex process than measuring it for still images. The Video & Stabilization module helps you characterize your device’s effectiveness by measuring translation, rotation, residual motion, and motion blur. In addition, the module also measures deformation due to Electronic Rolling Shutter.
This module includes essential hardware and software for executing a suite of video quality performance tests. You can analyze the exposure, white balance, color rendering, temporal and spatial noise, and edge and texture preservation of a captured video stream. The module provides two complementary lighting systems—ALS (Automated Lighting System) and DLS (Dynamic Lighting System). The former is a multi-illuminant system providing a wide range of color temperatures between 1 lux and 1000 lux, while the latter is a LED illuminant that provides instant light intensity changes from bright light to ultra-low light (0.5 lux).
|Min resolution||VGA (noise / exposure / white balance) or 1Mpix with distortion < 4% (texture)|
|Max resolution||4K for video and up to 50 Mpix for photo stabilization|
|FOV||Up to 160°, provided there is a 1 Mpix area with distortion < 4% in the image|
|Focal length||Down to 12mm (in 35 mm format)|
|Spectral sensitivity||Measurements are designed for visible-spectrum cameras|
|Sensor||Bayer filter sensor|
|File formats||Images: JPEG, BMP, PNG, TIFF, and many RAW formats (latest release notes include a list of supported RAW formats)
Videos: Windows Media Foundation (WMF) and DirectShow for opening video files. Available video formats depend on the operating system and the DirectShow codecs installed.