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    • 5. 发明授权
    • Digital camera device and methodology for distributed processing and wireless transmission of digital images
    • 用于分布式处理和数字图像无线传输的数码相机设备和方法
    • US07372485B1
    • 2008-05-13
    • US09434703
    • 1999-11-05
    • Eric O. BodnarShekhar KiraniVenkat V. EaswarPhilippe R. KahnSonia Lee Kahn
    • Eric O. BodnarShekhar KiraniVenkat V. EaswarPhilippe R. KahnSonia Lee Kahn
    • H04N9/68H04N7/12
    • G06T9/007
    • A digital imaging system is described that provides techniques for reducing the amount of processing power required by a given digital camera device and for reducing the bandwidth required for transmitting image information to a target platform. The system defers and/or distributes the processing between the digital imager (i.e., digital camera itself) and the target platform that the digital imager will ultimately be connected to. In this manner, the system is able to decrease the actual computation that occurs at the digital imager. Instead, the system only performs a partial computation at the digital imager device and completes the computation somewhere else, such as at a target computing device (e.g., desktop computer) where time and size are not an issue (relative to the imager). By deferring resource-intensive computations, the present invention substantially reduces the processor requirements and concomitant battery requirements for digital cameras. Further, by adopting an image strategy optimized for compression (compressed luminosity record), the present invention decreases the bandwidth requirements for transmitting images, thereby facilitating the wireless transmission of digital camera images.
    • 描述了一种数字成像系统,其提供用于减少给定的数码相机设备所需的处理能力的量并减少将图像信息传输到目标平台所需的带宽的技术。 该系统在数字成像器(即,数字照相机本身)和数字成像器最终将连接到的目标平台之间延迟和/或分发处理。 以这种方式,系统能够减少在数字成像器处发生的实际计算。 相反,该系统仅在数字成像器设备处执行部分计算,并且在诸如在时间和大小不是问题(相对于成像器)的目标计算设备(例如,台式计算机)处的其它地方完成计算。 通过推迟资源密集型计算,本发明大大降低了数字照相机的处理器要求和伴随的电池要求。 此外,通过采用针对压缩(压缩发光度记录)优化的图像策略,本发明降低了发送图像的带宽要求,从而有助于数字照相机图像的无线传输。
    • 10. 发明授权
    • Digital camera device providing improved methodology for rapidly taking successive pictures
    • 数码相机设备提供改进的方法来快速拍摄连续的图像
    • US08564683B2
    • 2013-10-22
    • US12961397
    • 2010-12-06
    • Venkat V. EaswarEric O. Bodnar
    • Venkat V. EaswarEric O. Bodnar
    • H04N5/228H04N5/76H04N7/12
    • G06T9/007H04N1/2112H04N1/46H04N1/64H04N2201/3247
    • An in-camera two-stage compression implementation is described that reduces the latency between snapshots to a fraction of that otherwise required by other systems that either process complete compression following each snapshot or that incorporate heavy, bulky, and expensive RAM hardware capable of maintaining several raw luminosity records (unprocessed file containing a digital image). In the 1st stage compression the raw luminosity record is quickly, yet partially, compressed to available RAM buffer space to allow a user to expeditiously capture a succeeding image. When the higher-priority processes, the user shooting pictures, and stage one compression subside, a 2nd stage compression, which is slower but more effective, decompresses the earlier partially-compressed images, and re-compresses them for saving in flash memory until they are distributed to a remote platform to be finally converted to the JPEG2000 format.
    • 描述了一种相机内两级压缩实现,将快照之间的延迟减少到其他系统要求的一小部分,这些系统在每个快照之后处理完整的压缩,或者包含重,体积庞大,昂贵的RAM硬件,能够维护几个 原始亮度记录(包含数字图像的未处理文件)。 在第一阶段压缩中,原始光度记录快速但部分地被压缩到可用的RAM缓冲空间,以允许用户快速捕获后续图像。 当优先级较高的进程,用户拍摄图片并进行一级压缩时,第二级压缩(其速度较慢但更有效)对先前的部分压缩图像进行解压缩,并重新压缩它们以保存在闪存中,直到它们 分发到远程平台,最终转换成JPEG2000格式。