Suppressing pixel coloration errors in HDR video systems

The present disclosure is directed to a process to partially or fully suppress, or limit, pixel coloration errors. These pixel coloration errors, represented by small noise values, can be introduced during signal processing of high dynamic range (HDR) video signals. Converting visual content to a half precision floating point representation, for example, FP16, can introduce small amounts of signalnoise due to value rounding. The noise can be multiplied and accumulated during HDR signal processing resulting in visual artifacts and degraded image quality. The disclosure can detect these noise amounts in pixel color component values, and suppress, or partially suppress, the noise to prevent the noise from accumulating during subsequent HDR signal processing. 本公开涉及抑制HDR视频系统中的像素着色误差，部分或完全抑制或限制像素着色误差的过程。在高动态范围(HDR)视频信号的信号处理期间，可能引入由小噪声值表示的这些像素着色误差。将可视内容转换为半精度浮点表示(例如，FP16)可能由于值四舍五入而引入少量信号噪声。在HDR信号处理期间，噪声可能倍增和累积，从而产生视觉伪像并降低图像质量。本公开可以检测像素颜色分量值中的这些噪声量，并且抑制或部分抑制噪声以防止噪声在随后的HDR信号处理期间累积。