| 发明名称 | Overshoot protection of upscaled images | ||
| 摘要 | A method of processing video data includes upscaling an input low resolution image to a high resolution image using a processor, detecting monotonicity in a direction normal to an edge in a low resolution neighborhood in the input low resolution image, and correcting pixels in a high resolution neighborhood of the high resolution image corresponding to the low resolution neighborhood to preserve at least some of the monotonicity. | ||
| 申请公布号 | US9589324(B1) | 申请公布日期 | 2017.03.07 |
| 申请号 | US201414227732 | 申请日期 | 2014.03.27 |
| 申请人 | PIXELWORKS, INC. | 发明人 | Liu Guodong;Zhang Bob;Woodall Neil;Chen Junhua;Ma Yue |
| 分类号 | G06K9/40;G06T3/40 | 主分类号 | G06K9/40 |
| 代理机构 | Marger Johnson | 代理人 | Marger Johnson |
| 主权项 | 1. A method of processing video data, comprising: upscaling an input low resolution image to a high resolution image using a processor; detecting monotonicity of pixel values in a direction normal to an edge in a low resolution neighborhood in the input low resolution image by: calculating horizontal, vertical, diagonal and anti-diagonal gradients for the low resolution neighborhood;grouping the horizontal and vertical gradients into a first gradient group, and grouping the diagonal anti-diagonal gradients into a second gradient;detecting a first normal direction for the first gradient group; anddetecting a second normal direction for the second gradient group; and correcting pixels in a high resolution neighborhood of the high resolution image corresponding to the low resolution neighborhood to preserve at least some of the monotonicity. | ||
| 地址 | Portland OR US | ||