发明名称 Backlight simulation at reduced resolutions to determine spatial modulation of light for high dynamic range images
摘要 Embodiments of the invention relate generally to generating images with an enhanced range of brightness levels, and more particularly, to facilitating high dynamic range imaging by adjusting pixel data and/or using predicted values of luminance, for example, at different resolutions. In at least one embodiment, a method generates an image with an enhanced range of brightness levels. The method can include accessing a model of backlight that includes data representing values of luminance for a number of first samples. The method also can include inverting the values of luminance, as well as upsampling inverted values of luminance to determine upsampled values of luminance. Further, the method can include scaling pixel data for a number of second samples by the upsampled values of luminance to control a modulator to generate an image.
申请公布号 US8890902(B2) 申请公布日期 2014.11.18
申请号 US200913123569 申请日期 2009.10.02
申请人 Dolby Laboratories Licensing Corporation 发明人 Johnson Lewis
分类号 G09G5/10;G09G3/34;G06T5/00;H04N5/14 主分类号 G09G5/10
代理机构 代理人
主权项 1. An apparatus comprising: a repository comprising: a data structure configured to arrange data representing predicted values of luminance for a number of samples that is greater in quantity than a number of light sources; a memory comprising: an inverter module, an upsampler module, and a pixel scaler module; and a processor configured to: access the data structure to fetch the data representing the predicted values of luminance, invert the predicted values of luminance, responsive to executable instructions in the inverter module, to establish a quantity of inverted values of luminance that is substantially equivalent to the number of samples, upsample the inverted values of luminance, responsive to executable instructions in the upsampler module, to generate a quantity of upsampled inverted values of luminance that is substantially equivalent to a number of pixels, and scale pixel data by the up sampled inverted values of luminance, responsive to executable instructions in the pixel scaler module, to form a modulation signal to control a front modulator to generate an image.
地址 San Francisco CA US
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