Digital image processing

一种数字成像、图像的技术，应用在图像通信、电视、彩色电视的零部件等方向，能够解决取景器图像没有适当地更新等问题，达到自动对焦准确、白平衡准确、精确自动对焦的效果

Inactive Publication Date: 2008-09-17
NOKIA TECH OY
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Problems solved by technology

[0006] Prior art digital cameras may differ slightly from the above description in the details of how they perform the autofocus and preview functions, but it will be appreciated that prior art systems have certain severe limitations, particularly in continuous and without Provides accurate focus data from megapixel images without delay
It can be appreciated that in prior art systems, fine focus data is not available all of the time because at certain moments only a scaled down low resolution image for the viewfinder is available
Also, in some cases the viewfinder image may not be properly updated when the high resolution image is captured for final focus

Method used

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[0021] Although specific terms are used in the following description for purposes of clarity, these terms are merely intended to refer to specific structures chosen to illustrate the invention in the drawings, and they are not intended to strictly define or limit the scope of the invention. scope. In the description, the generic term "image" is used to define the visual form of image data. Examples of images are still images, video images, and preview images used during capture. "Raw image" in this description refers to image data that has not been processed in any way. A raw image is uninterpreted data captured by an image sensor. A "processed image" is the result of processing the raw image data. The processed image can be interpreted visually, but this is not required. An "imaging device" may be any device including means for digital imaging. Thus, the imaging device may be a digital camera, an imaging phone, or some other device (eg, a web camera) that can contain or ...

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Abstract

A method, module, device, and computer program product for digital imaging. Providing an image within an image sensor, selecting at least one first region within image for scaling with a first scaling rate, selecting at least one second region within the image for scaling with a second scaling rate, and providing the first and the second regions for further processing allows improved autofocusing.

Description

technical field [0001] This patent application relates generally to digital image processing in digital imaging devices. Background technique [0002] In the past few years, digital imaging devices such as digital cameras have played a significant role in imaging technology. Conventional cameras rely entirely on chemical and mechanical processes and generally do not require electricity to operate. However, digital cameras have one or more built-in processors, and these cameras record images entirely digitally. Due to its electrical characteristics, digital cameras (or digital camera modules) can be easily integrated with other electronic devices, of which mobile communication devices (mobile terminals) are the most common example today. Depending on the host device (ie, the device with which the camera module is integrated), the camera module may communicate with several other components and systems of the device. For example, in a camera phone, the camera module is typic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/32
CPCH04N5/23212H04N23/67H04N23/88
Inventor J·尼克卡南O·卡勒沃
Owner NOKIA TECH OY
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