Einfluss von Tonemapping auf Bitrate und Bittiefe von codierten Sequenzen

It is generally accepted that HDR will need a higher bit rate because of more quantization steps and the fact that the images deal with much more detail in the highlights and shadows. However, it is only insufficiently taken into account that most of these details will be preserved when performing an HDR / SDR down-conversion using tone mapping. In this paper, we will investigate how the standard dynamic range bit rate is influenced by the HDR production. Therefore, peak signal-to-noise ratio measurements have been performed, and detailed explanations of the reasons are discussed. Moreover, it is not definitively known if the strong manipulation on the luminance component at down-conversion can produce artifacts such as banding. Accordingly, we will outline if 10bit will be sufficient for the acquisition process in such case.