Posts tagged: iPhone apps

iPhone Captures 4MP Images

As we all know, iPhone camera is a 2 megapixel camera. How could it capture 4 megapixel images? A recent iPhone application, ClearCam, can help you. ClearCam provides iPhone the enhanced capturing mode, by taking 6 photos sequentially in a very short time (2.5 seconds). It then creates a sharper, 4 megapixel image with less noise by combining these 6 photos. 

The technique used here is called multi-frame image super-resolution in computer vision. The idea is to increase the resolution of a captured image by fusing information from multiple images or a short video.   
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Pictures about Bush You Haven’t Seen in Public

Celebrity such as George W. Bush always shows smiling face and confident spirit to the public. Are you curious about what he looks like when he is angry or frustrated, or his mask when he attends friends’ Halloween parties?

Here is a collection of Bush’s faces you have no chance to see in public, with different facial expressions, facial makeovers, tattoos, funny expressions, and change of ethnicity, age, attractiveness and even gender. 
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Content-Aware Image Resizing Goes to iPhone

Content-aware image resizing (also called content-aware image retargeting, content-aware image scaling) is to enlarge or reduce the size of an image with minimum distortion of salient or important areas of the image. This is a very useful image processing feature for professional photography, online publishing and handheld-device display. 

Adobe Photoshop CS4 has recently released with a new feature, content-aware scaling. A recent iPhone application, PicTricks, also provides a feature of content-aware image resize, Magic Resize
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Real-Time Panorama Shooting Using Cell Phone Camera

Take a short video clip by panning your cell phone camera through a scene, the embedded algorithm wil automatically generate a panoramic picture for you instantly. This is a new cell phone photography feature in Sharp cell phones (e.g. SH9020C model).

This feature is called “VIVID Panorama” co-developed by Acrodea, Inc. and Morpho, Inc., Japan. In contrast to previous panoramic functions, such as iPhone applications, PanaLab and TripStitch, which stitch multiple still images into a panoramic photo, VIVID Panorama directly uses captured video clip to generate a panoramic picture, making it easy-to-use. It is fully automated and in real time.  

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More iPhone Apps Using Computer Vision and Image Processing Technology

Since our previous post, Mobile Vision: iPhone Apps Employ Computer Vision and Image Processing Techs, more iPhone applications using computer vision and image processing technology have come out. Here we review two more apps.

  1. SnapTell: Tell the price, store, or online website of a CD/DVD/Book/Video Game with a photographed cover image. This is an image retrieval/recognition problem.
  2. CubeCheater: Solve your puzzle cube with six pictures taken for each face of the cube. It uses image segmentation and blob detection technology.

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Mobile Vision: iPhone Apps Employ Computer Vision and Image Processing Techs

There are around 10,000 applications from third-party developers for Apple iPhones by the end of 2008. Among them, there are a number of camera/photo-related applications for you to play with. You will be amazed by how computer vision and image processing technologies could deliver you astonishing visual effects and fun, even with a 2MP mobile camera. Some of them offers a set of image editing functionalities like Adobe Photoshop,  such as image enhancement, image filtering, image/video editing, etc. Others use more advanced and complex computer vision technologies, such as object detection/recognition and image retrieval. Here we will review some of the top computer vision apps for iPhone and their core technologies.

 

 

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