The tonal response curve defines how tonal values in the raw image are mapped.
色调响应曲线定义原始图像中色调值的映射方式。
In the B-mode sector scan ultrasonic imaging system, the raw image is in polar coordinates, therefore, it is main tasks of image pre-processing to achieve image coordinate transform and interpolation.
在B型超声机械扇形扫描成像当中，原始图像信号是以极坐标的形式输出的，对图像进行实时坐标变换和漏点插补是图像预处理所要解决的主要问题。
Converting RAW image files to PPM via dcraw was slightly better with Ubuntu 9.10 Alpha 4, but a very slim difference.
用dcraw将RAW文件转换成PPM格式文件，Ubuntu 9.10Alpha4要好一点，但好的有限。
Converting RAW image files to PPM via dcraw was slightly better with Ubuntu 9.10 Alpha 4, but a very slim difference.
用dcraw将RAW文件转换成PPM格式文件，Ubuntu 9.10Alpha4要好一点，但好的有限。
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