Apple patent involves skin tone aware color boost for cameras
TweetFollow Us on Twitter

Apple patent involves skin tone aware color boost for cameras



An Apple patent (number 8311355) for skin tone aware color boost for cameras has appeared at the U.S. Patent & Trademark Office. The company obviously wants to continually improve the cameras in its portable devices.

As the patent notes, increasing color saturation and contrast in images generally leads to more pleasing images; however, doing so uniformly to all colors in the image can make skin tones appear with an overly red tint. One embodiment of an improved method of skin tone aware color boosting identifies areas of the image which look like skin tones and areas that do not look like skin tones. A blurred "skin tone mask" can then be created over the image.

One large boost operation and one small boost operation can be applied to the image. A final version of the image may then be created, applying the pixel values resulting from the small boosting operation to the skin tone regions and applying the pixel values resulting from the large boosting operation to the non-skin tone regions, using the blurred mask to provide a smooth transition between the skin tone and non-skin tone regions.

Here's Apple's background on the invention: "The digital image sensor, such as a charged coupled device (CCD), of a digital camera has a plurality of photo-sites arranged in a colored filtered array or pattern, such as a RGB Bayer pattern. In the RGB Bayer pattern, each photo-site is filtered so that it is receptive to either: red, green, blue, or some variation thereof. The type of colored filter array and digital imaging sensor varies typically based on the manufacture of the digital camera.

"For example, some color filtered arrays use a pattern of yellow, cyan, green, and magenta. Typically, the digital camera has an image pipeline that performs a demosaicing or de-Bayering process on the image, lens correction, and noise reduction. The image pipeline may then perform an RGB contrast and saturation 'boost' on the image data before encoding the image into the YCbCr family of color spaces or other format suitable for displaying and viewing.

"Various considerations must be addressed when processing a digital image obtained with a digital camera or other imaging device. One consideration involves preserving the spatial quality and the detail of the digital image, while another consideration involves sufficiently representing the color of the digital image. In many ways, these two considerations are interrelated.

One well-known problem with performing a color 'boost' operation on a digital image is that it can often have an undesirable affect on areas of the image where skin tones are present. Specifically, skin tones appear to be especially susceptible to boost operations introducing visually unappealing artifacts to the image. For example, certain lighting conditions can give skin tones an over-saturated, unnatural look when boosted. The result is that skin tones appear to have a strong orange, yellow, magenta, or red glow-while the rest of the image appears normally."

The inventors are Ralph Brunner and Mark Zimmer.

 
AAPL
$102.13
Apple Inc.
+1.24
GOOG
$571.00
Google Inc.
-6.86
MSFT
$44.87
Microsoft Corpora
-0.14
MacNews Search:
Community Search:

Latest Forum Discussions

See All
view counter

view counter
view counter
view counter
view counter
view counter
view counter

ALONE... (Games)
ALONE... 1.0.1 Device: iOS Universal Category: Games Price: $1.99, Version: 1.0.1 (iTunes) Description: ALONE is a handcrafted, intense survival journey through space. Navigate caves, rip through rocky debris, dodge rocks and comets and test your endurance as you pursue ever higher scores in this ultra fast, procedural runner.... | Read more »
Almightree: The Last Dreamer (Games)
Almightree: The Last Dreamer 1.0 Device: iOS Universal Category: Games Price: $1.99, Version: 1.0 (iTunes) Description: The world is shattering and you are the only hope to restore the balance. A thrilling and challenging 3D puzzle platformer game. Find your way to awaken the Almightree while racing with calamity. | Read more »
The Nightmare Cooperative (Games)
The Nightmare Cooperative 1.1 Device: iOS Universal Category: Games Price: $3.99, Version: 1.1 (iTunes) Description: Fiendishly difficult! Adorably cute! Utterly engrossing!How much gold can you get before your entire team is destroyed? IT'S NEVER ENOUGH! | Read more »
Mobile Convolution (Music)
Mobile Convolution 1.0.0 Device: iOS Universal Category: Music Price: $9.99, Version: 1.0.0 (iTunes) Description: | Read more »
Invaders! From Outer Space Review
Invaders! From Outer Space Review By Rob Thomas on August 27th, 2014 Our Rating: :: RETRO NOSTALGIAUniversal App - Designed for iPhone and iPad It’s a shame that Invaders! doesn’t offer deeper gameplay, as this retro-inspired remake’s presentation is dripping with nostalgic flavor.   | Read more »
Spooklands Review
Spooklands Review By Jennifer Allen on August 27th, 2014 Our Rating: :: ONE-TOUCH SHOOTERUniversal App - Designed for iPhone and iPad One-touch simultaneously controls your direction and your weapon in this unique arena shooter.   | Read more »
Heroes of Order & Chaos Add Twitch I...
Heroes of Order & Chaos Add Twitch Integration, New Heroes, and More Posted by Ellis Spice on August 27th, 2014 [ permalink ] | Read more »
Foodie Yama Review
Foodie Yama Review By Jennifer Allen on August 27th, 2014 Our Rating: :: BRIEFLY HOOKSUniversal App - Designed for iPhone and iPad Foodie Yama will draw you in for a brief while, and you’ll never be entirely sure why.   | Read more »
Spotify Connect Turns One, Now Supports...
Spotify Connect Turns One, Now Supports New Devices Posted by Ellis Spice on August 27th, 2014 [ permalink ] Universal App - Designed for iPhone and iPad | Read more »
The Rise of PicsaStock and How You Can M...
We all take plenty of photos, right? That’s the joy of having a reasonably powerful camera in your pocket, thanks to your trusty iPhone and a bevy of similarly useful apps. Wouldn’t it be great to make some money out of those snaps? While your selfies might not garner much attention, there’s sure to be some great shots that will appeal to someone... | Read more »
All contents are Copyright 1984-2010 by Xplain Corporation. All rights reserved. Theme designed by Icreon.