Future iPhones and iPads may sport cameras with tilt and perspective correction. Apple has filed for a patent (number 9,113,078) with the U.S. Patent & Trademark Office for such technology.
In the patent filing, Apple notes that, while the ability to take pictures using electronic devices such as an iPhone or iPad, is advantageous and convenient, it's often difficult for the user to steady these evices and/or keep them level while taking a picture. This lack of ability to steady the electronic devices and/or keep them level while taking the picture often results in distortion in the picture being tilted and/or having a perspective that the user may not like.
In fact, tilted pictures and/or pictures with an incorrect perspective may also be taken from cameras. For example, a user may not have a tripod when taking a picture with a camera and so the user may take a picture at an angle. Regardless of whether a distorted picture is produced using a camera or an electronic device having an integrated image capture device, it's often corrected through post-processing.
Apple says that, unfortunately, this post-processing may require sophisticated image processing software and/or a substantial amount of involvement by the user to correct the distortion. The company wants its mobile devices to deal with such issues via the built-in cameras themselves.
The tilt/perspective correction method could include reading an orientation measurement associated with a relative position of an image capture device with respect to an object, determining if the orientation measurement is less than a threshold, and in the event that the orientation measurement is less than the threshold, correcting an image obtained by the image capture device.
The apparatus may also include an image sensor, a memory coupled to the image sensor, an orientation measurement device coupled to the image sensor, and a distance measurement device coupled to the image sensor, where the image data may be stored in the memory along with a measurement from the accelerometer and along with a measurement from the distance measurement device.