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<== Date ==> | <== Thread ==> |
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Subject: | areaDetector driver pixel types |
From: | Phil Atkin <[email protected]> |
To: | "[email protected]" <[email protected]> |
Date: | Thu, 7 Jan 2016 16:45:09 +0000 |
Hi, My camera only generates uint16 pixels, so I have removed the configuration setting and constructor argument. In the constructor, I set the NDDataType parameter to NDUInt16. When I debug my code, it seems as though the buffer is being allocated as expected as an unsigned 16-bit buffer and all is well. However, I then notice to my surprise that the ImageJ viewer plugin is showing "2000x1500 pixels; 8-bit; 2.9MB. What's more, something is clearly scaling my data from the 16 bits I generate (0..65535) to the 8 bit range of the display (0..255). Also, I discover that the startup file contains: dbLoadRecords("NDStdArrays.template", "P=$(PREFIX),R=image1:,PORT=Image1,ADDR=0,TIMEOUT=1,NDARRAY_PORT=$(PORT),TYPE=Int8,FTVL=UCHAR,NELEMENTS=12000000")That looks wrong, so I change it to the alternative given for 16-bit data in the ADExample script I'm working from: dbLoadRecords("NDStdArrays.template", "P=$(PREFIX),R=image1:,PORT=Image1,ADDR=0,TIMEOUT=1,NDARRAY_PORT=$(PORT),TYPE=Int16,FTVL=USHORT,NELEMENTS=12000000")Now, I find that the ImageJ viewer plugin is showing "2000x1500 pixels; 32-bit; 12MB". Also, the display is now permanently black. I'm confused; can anyone explain, please? Thanks, Phil --
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