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Posts Tagged ‘superslowmotion’

Kandao uses AI to convert 30fps 360-degree video into super-slow-motion footage

19 Apr

Kandao, the makers of professional-grade 360-degree cameras and the Kandao Raw+ image stacking tool for Raw files has launched another potentially very useful software feature. AI Slow-motion is designed to convert 360-degree video footage that has been recorded at a regular 30 frames per second into 300 fps super-slow-motion clips.

The software uses artificial intelligence and machine learning methods to predict and generate intermediate frames for a smooth and detailed slow-motion output from existing 360/VR footage.

The company says that compared to optical flow or interpolation methods that are used in other applications, the AI-generated footage offers more accurate frame interpolation as well as fewer jagged edges and other artifacts. The software also requires less powerful hardware than comparable systems.

The feature will first be implemented into the Kandao QooCam Studio and Kandao Studio applications, allowing for an up to 10x slow-motion effect. For example, 360-degree video originally captured at 8k 30fps can be converted into 8K 240fps slow-motion or 4k 60fps video into 4K 480fps footage, by selecting a factor of eight during the 360 stitching workflow in the software software.

The bad news is that, although the algorithm behind the feature can work with any existing videos, in a first step the technology will only work with video from Kandao cameras. However, the company says it will make AI slow motion available for other cameras in the future, which is good news for 360-degree videographers who would like to work with super-slow-motion without splashing out on ultra-powerful hardware.

Kandao camera users can now download Qoocam Studio with AI slow motion free of charge on the Kandao website. Kandao Studio V3.0 with AI slow-motion will available on 23rd April.

Articles: Digital Photography Review (dpreview.com)

 
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Samsung explains the sensor tech behind the Galaxy S9’s super-slow-motion mode

05 Apr

Samsung published a couple of technical blog posts today, providing some detail on the stacked sensor technology used in the new Galaxy S9 and S9 Plus smartphones, and specifically how this tech is used to power the devices’ super-slow-motion mode.

This mode can record 960 frames per second at HD resolution for a duration of 0.2 seconds, which translates into 6 seconds playback time at 30 fps—32 times slower than standard video. The resulting videos can be reversed, exported as GIFs and edited in other ways.

To achieve the blistering fast frame rates, Samsung has adopted similar imaging technology to what we’ve previously seen on some Sony devices. The S9 sensor offers faster sensor readout-times, bandwidth and video processing of the application sensor than on previous Galaxy generations by using a three-layer stacked sensor design that consists of the CMOS image sensor itself, a 4x faster readout circuit, and a dedicated DRAM memory chip for buffering:

In addition to slow-motion, the stacked sensor helps reduce rolling shutter effects in video mode, and counter camera shake through frame-stacking methodologies.

“We were able to achieve a readout speed that is four times faster than conventional cameras thanks to a three-layer stacked image sensor that includes the CMOS image sensor itself, a fast readout circuit, and a dedicated dynamic random-access (DRAM) memory chip, which previously was not added to image sensors,” explained Dongsoo Kim. “Integrating DRAM allowed us to overcome obstacles such as speed limits between the sensor and application processor (AP) in a high-speed camera with 960fps features.”

You can see some of the Samsung super-slow-motion video results in the video below. Samsung’s article on the technology is available on its blog, where you’ll also find an interview with the team behind the new sensor.

Articles: Digital Photography Review (dpreview.com)

 
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Samsung unveils Galaxy S9 with variable aperture and super-slow-motion

26 Feb

Samsung has unveiled its new Galaxy S series flagship phones, the Galaxy S9 and Galaxy S9+, at the Mobile World Congress in Barcelona today and the new devices’ cameras deliver what Samsung’s teaser videos had been promising: Variable aperture, super-slow-motion and AR emojis.

The main camera features an aperture that can switch between F1.5 for low light shooting and F2.4 in brighter light. The new aperture system is coupled with a 12MP “Super Speed” sensor that features an integrated DRAM module for more processing power when using computational imaging to reduce noise and increase image detail.

The additional processing power also comes in handy for the new super-slow-motion mode. Like recent high-end Sony Xperia models, the Galaxy S9 devices can record HD video at 960 frames per second for 0.2 seconds. That translates into 6 seconds playback time at 30 frames per second. Slow-motion videos can be converted into gifs or set as background videos on the home screen.

The new AR Emoji function allows you to create and personalize emojis based on your own face, using the front camera. In a second step emojis can be animated using facial expressions. You can save up to 18 AR emojis and share them with users of any smartphone, not just Samsung models.

New features aside, the camera specs haven’t changed too much compared to existing models. The main camera features optical image stabilization and a Dual-Pixel AF. The Galaxy S9+ comes with a secondary tele-lens, similar to what we’ve seen on the Galaxy Note 8, allowing for better-quality zooming and a bokeh mode. The longer lens comes with optical image stabilization and an F2.4 aperture. The front camera on both models combines an 8MP pixel count with a fast F1.7 aperture.

Camera aside, the main difference between the two new models is display size. The Galaxy S9 comes with a 5.77″ AMOLED display, the S9+ equivalent is a little larger at 6.22″. Both screens offer WQHD resolution.

Both models come with a microSD card slot and a headphone jack and are powered by Samsung’s Exynos 9 Series 9810 Octa Core chipset. In the Euro-zone the Galaxy S9 with 64GB of storage will be available from March for 850 Euros (approximately USD 1045). The S9+ is 100 Euros (approximately USD 120)more. No details on pricing in other regions have been released yet.

Articles: Digital Photography Review (dpreview.com)

 
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