Patent application number | Description | Published |
20120195492 | Method and apparatus for generating a dense depth map using an adaptive joint bilateral filter - A method and apparatus for generating a dense depth map. In one embodiment, the method includes applying a joint bilateral filter to a first depth map to generate a second depth map, where at least one filter weight of the joint bilateral filter is adapted based upon content of an image represented by the first depth map, and the second depth map has a higher resolution than the first depth map. | 08-02-2012 |
20120249816 | FOCUS DIRECTION DETECTION CONFIDENCE SYSTEM AND METHOD - An apparatus and method for determining confidence in focus direction detection, including the steps of capturing a plurality of images, calculating sets of matching errors and blur difference estimations relating to the images, capturing a plurality of object images; calculating sets of matching errors and blur difference estimations relating to the images, calculating a confidence indicator as a function of either the matching errors or blur difference estimations, and automatically adjusting a focus control element in response to said confidence indicator exceeding a threshold value. | 10-04-2012 |
20120250999 | DETECTION OF LOW CONTRAST FOR IMAGE PROCESSING - There are many applications that conduct both generation of contrast or complexity level and motion estimation for video processing. The applications often use a block matching technique. An embedded system such as a personal digital camera is an example of such an application. Additionally, comparison of error differences around the location of minimum error in a motion estimation error table is able to be used to determine low contrast in a scene. | 10-04-2012 |
20130141537 | Methodology For Performing Depth Estimation With Defocused Images Under Extreme Lighting Conditions - A methodology for performing a depth estimation procedure with defocused images under extreme lighting conditions includes a camera device with a sensor for capturing blur images of a photographic target under extreme lighting conditions. The extreme lighting conditions may include over-exposed conditions and/or under-exposed conditions. The camera device also includes a depth generator that performs the depth estimation procedure by utilizing the captured blur images. The depth estimation procedure includes a clipped-pixel substitution procedure to compensate for the extreme lighting conditions. | 06-06-2013 |
20130141615 | System And Method For Utilizing Scene Detection In A Depth Estimation Procedure - A system and method for performing a depth estimation procedure includes a camera device with a sensor device for capturing blur images of a photographic target. Each of the captured blur images has a corresponding scene type that includes either a Gaussian scene type or a pillbox scene type. A depth generator performs a scene recognition procedure to identify the appropriate scene type for the respective blur images. The depth generator then selects an effective depth estimation procedure depending upon the detected scene type. | 06-06-2013 |
20130142386 | System And Method For Evaluating Focus Direction Under Various Lighting Conditions - A system and method for generating a direction confidence measure includes a camera sensor device that captures blur images of a photographic target. A depth estimator calculates matching errors for the blur images. The depth estimator then generates the direction confidence measure by utilizing the matching errors and a dynamic optimization constant that is selected depending upon image characteristics of the blur images. | 06-06-2013 |
20130142394 | System And Method For Performing Depth Estimation Utilizing Defocused Pillbox Images - A system and method for performing a depth estimation procedure utilizing defocused pillbox images includes a camera device with a sensor device for capturing pillbox blur images of a photographic target. The camera utilizes a depth estimator for performing a Gaussianization procedure that transforms the pillbox blur images into corresponding Gaussian blur images. The Gaussianization procedure is performed by convolving the pillbox blur images with a Gaussianization kernel to generate the corresponding Gaussian blur images. The depth estimator then utilizes the Gaussian blur images for effectively performing the depth estimation procedure. | 06-06-2013 |
20140064552 | System And Method For Utilizing Enhanced Scene Detection In A Depth Estimation Procedure - A system for performing an enhanced scene detection procedure including a sensor device for capturing blur images of a photographic target. The blur images each correspond to a scene type that is detected from a first scene type which is typically a pillbox blur scene, and a second scene type which is typically a Gaussian scene type. A scene detector performs an initial scene detection procedure to identify a candidate scene type for the blur images. The scene detector then performs the enhanced scene detection procedure to identify a final scene type for the blur images. | 03-06-2014 |
20140132822 | MULTI-RESOLUTION DEPTH-FROM-DEFOCUS-BASED AUTOFOCUS - A hierarchical method of achieving auto focus using depth from defocus is described herein. The depth from defocus technique is performed hierarchically in the resolution that is determined to be optimal at each step. Where higher resolution gives the better accuracy but requires more computational costs, the optimal resolution is estimated based on the target accuracy and the possible max blur amount at each step, which determines the amount of the computation and the number of pixels in the focus area. The proposed multi-resolution depth-from-defocus-based autofocus enables the reduction in the required resource, which is beneficial in the system where resource is limited. | 05-15-2014 |