DYNAMIC RANGE CONVERTER WITH PIPELINED ARCHITECTURE AND METHODS FOR USE THEREWITH

摘要

In various embodiments, a dynamic range converter includes a plurality of circuits configured in a processing pipeline for operation timed by a pixel clock. The plurality of circuits include a first color space converter to convert a source color space of a source video having a source dynamic range to nonlinear color space signals. A linearizer configured converts the nonlinear color space signals to linearized color space signals having a mastering dynamic range via a piecewise linear interpolation of a transfer function. A color volume transformer applies dynamic color transform metadata associated with the source video to generate master adjusted color space signals from the linearized color space signals. A delinearizer converts the master adjusted color space signals to nonlinearized color space signals via a piecewise linear interpolation of an inverse transfer function in accordance with a display dynamic range. A second color space converter converts the nonlinearized color space signals to display domain signals. Other embodiments are disclosed.

主权项

1. A dynamic range converter comprising:
a plurality of circuits configured in a processing pipeline for operation timed by a pixel clock, wherein the plurality of circuits include: a first color space converter configured to convert a source color space of a source video having a source dynamic range to nonlinear color space signals; a linearizer configured to convert the nonlinear color space signals to linearized color space signals having a mastering dynamic range via a piecewise linear interpolation of a transfer function; a color volume transformer configured to apply dynamic color transform metadata associated with the source video to generate master adjusted color space signals from the linearized color space signals; a delinearizer configured to convert the master adjusted color space signals to nonlinearized color space signals via a piecewise linear interpolation of an inverse transfer function in accordance with a display dynamic range; and a second color space converter configured to convert the nonlinearized color space signals to display domain signals.