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Andreoli__Carlo

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01-27-2010
06:17 AM

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Logarithm base 10

In the software i'm actually developing i have to apply a log_{10}(*x*) to a 16 bit images...from what i have seen the only similar function are:

- ipps10Log10_32s_Sfs ... but it works only on 32bit of information

- ippiLn__{10}(*x*)=log_{e}(*x*)/log_{e}(10) ...but still i'm not totally stasfied

It's a common use on image processing to do something like c*log_{b}(X) where c and b are variables.

I have miss some function to implement this function?

Can i expect a future implementation on this?

Sorry for my bad english,

Mr. Andreoli Carlo

1 Solution

Artem_V_Intel

Employee

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01-28-2010
11:43 PM

142 Views

Hello Mr. Carlo,

Could you please specify how many color channels your image have? Is it a right understanding that you have one color channel images with 16-bit unsigned pixel values?

In this case you may use for instance ippiConvert_16u32f_C1R function to convert your data in format appropriate for ipps10Log10_32s_Sfs function. After that you should use ippiConvert_32f16u_C1R function.

Thanks,

Art

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Artem_V_Intel

Employee

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01-28-2010
11:43 PM

143 Views

Hello Mr. Carlo,

Could you please specify how many color channels your image have? Is it a right understanding that you have one color channel images with 16-bit unsigned pixel values?

In this case you may use for instance ippiConvert_16u32f_C1R function to convert your data in format appropriate for ipps10Log10_32s_Sfs function. After that you should use ippiConvert_32f16u_C1R function.

Thanks,

Art

Andreoli__Carlo

Beginner

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01-31-2010
11:34 PM

142 Views

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