-
公开(公告)号：US20130321677A1
公开(公告)日：2013-12-05
申请号：US13485056
申请日：2012-05-31
申请人： Guy Cote , Sheng Lin , Suk Hwan Lim , D. Amnon Silverstein , David Hayward , Simon Wolfenden Butler , Joseph Anthony Petolino, JR. , Joseph P. Bratt
发明人： Guy Cote , Sheng Lin , Suk Hwan Lim , D. Amnon Silverstein , David Hayward , Simon Wolfenden Butler , Joseph Anthony Petolino, JR. , Joseph P. Bratt
IPC分类号： H04N5/217
CPC分类号： H04N5/217 , H04N5/2176 , H04N5/357
摘要： Systems and methods for processing raw image data are provided. One example of such a system may include memory to store image data in raw format from a digital imaging device and an image signal processor to process the image data. The image signal processor may include data conversion logic and a raw image processing pipeline. The data conversion logic may convert the image data into a signed format to preserve negative noise from the digital imaging device. The raw image processing pipeline may at least partly process the image data in the signed format. The raw image processing pipeline may also include, among other things, black level compensation logic, fixed pattern noise reduction logic, temporal filtering logic, defective pixel correction logic, spatial noise filtering logic, lens shading correction logic, and highlight recovery logic.
摘要翻译： 提供了处理原始图像数据的系统和方法。 这种系统的一个示例可以包括存储器，以存储来自数字成像设备的原始格式的图像数据和图像信号处理器来处理图像数据。 图像信号处理器可以包括数据转换逻辑和原始图像处理流水线。 数据转换逻辑可以将图像数据转换为带符号格式以保护来自数字成像装置的负噪声。 原始图像处理流水线可以至少部分地以签名格式处理图像数据。 原始图像处理流水线还可以包括黑电平补偿逻辑，固定图案噪声降低逻辑，时间滤波逻辑，缺陷像素校正逻辑，空间噪声滤波逻辑，透镜阴影校正逻辑和高亮恢复逻辑。
-
公开(公告)号：US20130321678A1
公开(公告)日：2013-12-05
申请号：US13485235
申请日：2012-05-31
CPC分类号： H04N9/64 , H04N5/142 , H04N5/23229 , H04N5/23254 , H04N5/365 , H04N5/367 , H04N9/045 , H04N9/735
摘要： Systems and methods for correcting intensity drop-offs due to geometric properties of lenses are provided. In one example, a method includes receiving an input pixel of the image data, the image data acquired using an image sensor. A color component of the input pixel is determined. A gain grid is determined by pointing to the gain grid in external memory. Each of the plurality of grid points is associated with a lens shading gain selected based upon the color of the input pixel. A nearest set of grid points that enclose the input pixel is identified. Further, a lens shading gain is determined by interpolating the lens shading gains associated with each of the set of grid points and is applied to the input pixel.
摘要翻译： 提供了由于透镜的几何特性来校正强度降低的系统和方法。 在一个示例中，一种方法包括接收图像数据的输入像素，使用图像传感器获取的图像数据。 确定输入像素的颜色分量。 通过指向外部存储器中的增益栅格来确定增益栅格。 多个网格点中的每一个都与基于输入像素的颜色选择的透镜阴影增益相关联。 识别包围输入像素的最近的一组网格点。 此外，通过内插与该组网格点中的每一个相关联的透镜遮蔽增益来确定透镜阴影增益，并将其应用于输入像素。
-
公开(公告)号：US20130321675A1
公开(公告)日：2013-12-05
申请号：US13485024
申请日：2012-05-31
CPC分类号： H04N9/64 , H04N5/23212 , H04N5/23229 , H04N5/23254 , H04N5/365 , H04N5/367 , H04N9/045
摘要： Systems and methods for down-scaling are provided. In one example, a method for processing image data includes determining a plurality of output pixel locations using a position value stored by a position register, using the current position value to select a center input pixel from the image data and selecting an index value, selecting a set of input pixels adjacent to the center input pixel, selecting a set of filtering coefficients from a filter coefficient lookup table using the index value, filtering the set of source input pixels to apply a respective one of the set of filtering coefficients to each of the set of source input pixels to determine an output value for the current output pixel at the current position value, and correcting chromatic aberrations in the set of source input pixels.
-
-
搜索结果
3 条记录 (耗时 0.029 秒)