ASTRORAW功能描述 AstroRaw是自编的用于RAW文件处理的程序。其基本的处理思路是: 1)将原始的RAW文件(cr2或nef)解压缩,还原成CCD读数值(DCR文件)。 2)将CCD读数值(DCR文件)用插值算法转化为RGB图像(LDF文件)。
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3)对DCR或LDF文件执行加减乘除,移位,旋转,中值平均,白平衡等操作。 4)最后将LDF文件转化为psd或者jpeg文件输出,再在photoshop中进行处理。 5)对一些相同的文件操作进行批处理。 程序退出时会生成一个log文件。 程序的功能说明: 一 CR2页 此栏目用来将CR2文件转为DCR文件格式。 OpenDcr可用来选择多个cr2文件,多选文件名在batchfile中显示。目前支持EOS20D和30D的cr2文件。 当前文件信息在EXIF Information中列出,缩略图在thumbnailimage显示。可以切换显示cr2内的三个缩略图。 SaveToDcr启动转换,存为同名dcr文件。 busy/idle显示工作状态。 本栏操作不记入log文件。 二 D70 NEF页 此栏目用来将D70的nef文件转为DCR文件格式。用法与CR2页相同。 三 DCR页 此栏目用于DCR文件的处理。
OpenDcr用于打开一个DCR文件并存入一个画板内,画板内的原有数据被清除,文件名被显示在按键下边。reload用来重新打开显示在opendcr按键下的文件。ClearMem清除画板上的数据。 FileCalculation区用来对画板上的文件和另一个文件进行运算。包括减(SubDcr)操作,加(AddDcr,支持多选)操作和存为另一个DCR文件。 SaveFlat将画板上的图像的绿色像素经线性插值存为一个DCR平场图像,用于平场改正(在File页)。 NumberCalculation区用来对画板上的文件和一个数字进行运算。包括加减乘除和白平衡。白平衡(balance)只对红色和蓝色像素乘以相对应的系数。 DCR文件为十六位,溢出的数值被截断。 按show键在preview区显示当前画板上的图样,是按照0.45的反差进行修正的。 Demosaic区用于将画板上的图像转为RGB图像。可以选择3种方法。4channel是将每个RGGB单元内的4个像素直接存为RGBG'4个图层。 四 LDF页 此栏目用于LDF文件的处理。 显示: log区域显示操作的历史。 按键功能: OpenLDF:打开一个ldf文件读入画板。画板内原有数据被清除。 ClearMem:画板内数据被清除。 SaveLDF:将画板内数据存为ldf文件。 Aligned Add:打开一个文件,将它的左上角平移到[x,y](X轴向右,Y轴向下)的位置后与画板上的图像相加。如果原来画板为空,则直接平移。移动时移出边缘的像素会补到另一侧。 Sub LDF:画板上的图像与打开的文件相减。 Gamma:对每个像素执行指数操作。 Sub,Multi:每个图层减去、乘以相应的值。 Set: 所有像素设置为输入值。 Div,Multi:所有像素除以、乘以相同的值(整数) Rotate:顺时针旋转,角度单位毫弧度。 mean value:显示每个图层的平均和最大值。 五 File页 此栏目用于文件操作和批处理。(2006-12-26) Transform区:用于文件转换,包括
Batch区:对多选的文件执行批处理。
File Operation文件运算区:
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