More and more people now wear small cameras with him - whether in mobile phones or other mobile digital devices. The quality of the pictures that these cameras provide, however, is still relatively poor, how on platforms such as YouTube can see every day: football jerky, poorly lighted steps, or a baby verpixelte party cutouts are the rule rather than the exception. MotionDSP , a company from the San Mateo, California, wants this spring is a PC software available for download by some of the worst problems of digital moving pictures to be solved - from camera shake up to the bad lighting. The product named "vReveal" will cost $ 40 and is aimed at the average amateur filmmakers, which is a bit better holiday pictures want to make as little as possible but wants to spend money.
According MotionDSP CEO Sean Varah, the image enhancement algorithms originally developed for the U.S. secret service CIA developed abroad. The now standing before the publication of retail version includes an easy to use editing tool with which to cut and clip together can. It runs under Windows XP and Vista.
The idea of movies with the help of video optimization techniques to improve is by no means new. For years, software vendors, inter alia, on so-called "super-resolution algorithms, the scenes appear to be less blurry. It will provide information about the color and position of the pixels initially for a handful of frames collected and then to extrapolate additional image information. This will sharpen edges and jerky movements, supported by a trembling camera work is partially resolved. Salient Stills, an MIT spinoff, which was founded in 2000, used such super-resolution algorithms and other techniques to videos for law enforcement agencies to improve . More recently, Intel has also the potential of the image optimization in the context of new applications for multi-core processors are examined.
Apple's iMovie software to the most popular amateur programs include cut, announced at the Macworld trade show in January a new version, an automatic image stabilization is included. Also, Sony and Adobe video editors also to the corresponding optimization features for under $ 100 offer.
Varah still sees advantages in his home-made technology. vReveal was specifically designed for home users have been developed. "Sony and Adobe have, however, with high-end programs started. Denen were gradually deprived of functions to make them cheap enough to make it to ordinary consumers to be able to sell." Varah also stresses the MotionDSP algorithms due to their use in the CIA would have higher requirements must meet. Moreover, on several special patents, which researchers at the University of Santa Cruz have developed as technology MotionDSP chief Nikola Bozinovic says.
The algorithms of the company investigate movements across multiple frames to determine which parts of it due to abrupt camera emerged. These movements will then be deducted and the final result is calculated accordingly.
In order to increase the brightness without compromising the image quality can suffer too, continues to vReveal another trick: "Any software can do, this is simply the pixel intensity by a factor of two hochskaliert." The problem with this, so Bozinovic: This would include the noise in the signal increases, leading to a granular representation leads. MotionDSP Eliminate the noise, therefore, by a number of frames having an average will be taken.
Another function of vReal increases the effective number of individual images in a video. Many phones are only 15 frames per second, which means that movements of the human eye choppy effect. Around a video effect only from 30 individual frames per second. By analyzing the movements of individual objects within multiple frames vReveal therefore synthesized Between shots.
Laura Teodosio, co-founder of Salient Stills, says that the set of MotionDSP super-resolution technology is not exactly groundbreaking, was: "In these algorithms and techniques has improved in recent years only little changed."
Interestingly, however, attempt this approach is specific in the retail market to fetch. "The challenges in this sector are always two things: First, a product simple enough so that it remains operable, and secondly, the image enhancement clearly enough so that the user is applied again and again."
Should vReveal successful, could MotionDSP algorithms make their way into other software products. Middle of next year, the company wants a part of their source code to other developers is available. Companies such as Internet telephony provider Skype, they could be, for example, for its online services in order to improve the image quality without having to use more bandwidth. Moreover, Internet video providers like YouTube from technology to benefit the Samaritans to improve image quality.
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