Rolling shutter distortion is an effect that can occur while using rolling shutter camera to capture fast-moving subjects. It is caused by the delay between the beginning and the end of the sensor readout, this can result in vertical or horizontal lines appearing bent or slanted, giving the image a distorted appearance.

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The USB camera module integrates the camera unit and the video capture unit, and then connects to the host system through the USB interface. The camera unit combining the camera lens to the image sensor depends on different image requirements like view angle, resolution, sensor features, etc. The video capture unit usually considers the image processing application: the filter which wavelength band we need, compatible DSP or microcontroller, sensor commands support, frame rate, etc. IADIY offers several UVC board cameras as an implement for our current embedded MIPI camera modules. These cameras have more case-specific features like Wide Dynamic Range (WDR), low light enhancement, also different view angle camera lens optional.

A faster shutter speed can help to the amount of time that the sensor is exposed to light. This means that there is less time for the subject to move while the sensor is being read, which can help to reduce motion artifacts. However… even with a fast shutter speed, rolling shutter distortion can still occur if the subject is moving at a very high speed. In these cases, the only solution is to use a global shutter equipped camera. For catching high speed or motion image, we recommend to try our global shutter camera module to see the advantages.

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The USB camera module is a general-purpose camera control board designed for both PCs and embedded systems like the ARM, Raspberry Pi, Odroid, and similar hardware. It supports almost all parallel interface image sensors and many MIPI camera sensors, including both global and rolling shutter sensors. The USB cameras adopt the standards of the USB interface, so they are easily expandable and adapted. What’s more, they could be made driver-free by following the USB device standards.

The UVC is one of the USB device classes. The drivers for UVC cameras to work have already been preinstalled in the operating system. Those driver-free USB cameras are UVC cameras. Computer and other mobile devices are connected directly through the USB interface simply plug and play. These UVC compliant camera modules are compatible with Windows and Linux software and do not require drivers.

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Since the rolling shutter captures different parts of the image at slightly different times, it can create motion blurriness. When there is an object moving at a very high-speed, it may appear distorted or elongated due to the time difference in capturing different parts of the target. This can be particularly noticeable in situations such as sports photography or capturing moving vehicles.

On the other hand, global shutter camera is designated to capture an image by simultaneously exposing all the pixels in its image sensor to light for a brief period of time. Unlike a rolling shutter camera, which scans the image sensor row by row, a global shutter camera captures the entire image instantaneously.

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An electronic shutter electronically turns the image sensor on and off to control exposure. The sensor starts detecting light when activated and stops detecting light when deactivated.

More global shutter camera module information please review  camera module introduction or custom camera module requirements flow.

Rolling shutter cameras capture the scene line by line, from top to bottom, causing a time difference between top and bottom parts. Motion or camera movement results in the distortion known as the rolling shutter effect.