最近在使用TVP5154作为视频解码芯片,其datasheet里提到过图像增强相关内容,想请问一下它的图像增强体现在哪些方面并如何实现的?
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Jerry,
TVP5154的手册上有如下描述,应该是芯片硬件设计本身就提高图像的高频信号信息,例如锐度。
4.5 Luminance Processing
The luma component is derived from the composite signal by subtracting the remodulated chroma
information. A line delay exists in this path to compensate for the line delay in the adaptive comb filter in
the color processing chain. The luma information is then fed into the peaking circuit, which enhances the
high-frequency components of the signal, thus, improving sharpness.
其他请参考资源帖:http://www.deyisupport.com/question_answer/dsp_arm/davinci_digital_media_processors/f/39/t/52747.aspx。