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convert a dicom image.

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This topic and its replies were posted before the current version of LEADTOOLS was released and may no longer be applicable.

#1 Posted : Monday, July 23, 2007 6:22:53 PM(UTC)

yymmartin

Groups: Registered
Posts: 2

Hi:

I want do a conversion.

Original image with attributes:

Bits Allocated: 16

Bits Stored: 16

High Bit: 15

signed

I want the image result with attributes:

Bits Allocated: 16

Bits Stored: 12

High Bit: 11

unsigned

How Can I do?

I am a Chinese,I am not sure You Can see me inextenso,But I really want Your Help.

Thanks


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#2 Posted : Wednesday, July 25, 2007 7:21:03 AM(UTC)

GregR

Groups: Registered, Tech Support, Administrators
Posts: 764

I would try using L_ColorResBitmap to convert the image to 12bpp. After that you will probably need to call L_GetMinMaxBits and then update your tags (bits allocated, stored, etc.) accordingly.

As for going from signed to unsigned, use the function L_ConvertBitmapSignedToUnsigned.

These functions are from the API, but there should be equivalents in whatever interface you're using.

#3 Posted : Wednesday, July 25, 2007 6:53:49 PM(UTC)

yymmartin

Groups: Registered
Posts: 2

I using LEADTOOLS Visual Component library(VCL) and LEADTOOLS DICOM VCL.

Can you do this conversion for me? post the code here. I think that is perfection.

then source file is attached.

thanks again.

File Attachment(s):

Slices.2.rar (145kb) downloaded 34 time(s).

#4 Posted : Friday, July 27, 2007 6:55:41 AM(UTC)

Travis

Groups: Registered, Tech Support
Posts: 207

Was thanked: 3 time(s) in 3 post(s)

What you're trying to do cannot be done. The image you have provided has a Minimum Value of -3023 and a Maximum Value of 1418. Meaning it contains 4441 values. It would take 2^13 bits per pixel to display this many values as 2^12 would only allow 4096 values.

An option you could use though would be the RemapIntensity to map the values from 2^13 to 2^12. I would recommend using this function.

Travis Montgomery
Senior Sales Engineer

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