frequency and contrast everywhere, not only at edges. They give me part of
> Hi Sidnei,
>
> I am not sure if this will be a solution you are looking for, but have you
> considered unsharp masking (>Process > Filters > Unsharp Mask...).
> Another possibility might be the "Contrast Detection from the BioVoxxel
> Toolbox if you tick the option "enhance edges in original". This method
> applied grayscale erosion and dilation to enhance edges and thereny might
> lead to stronger edge enhancement than the unsharp mask but can also induce
> artifacts if overdone.
>
> kind regards,
> Jan
>
>
> 2013/6/22 Sidnei Paciornik <
[hidden email]>
>
>> Hi Jan
>> I guess this is not quite the answer. I don't need edge detection, but
>> edge enhancement. I couldn't figure how either of your hints would do it.
>> The algorithm should be simple. Take a neighborhood, calculate min, max,
>> and range R.
>> Pick a threshold T.
>> If T>R it is not an edge, keep input pixel.
>> Else exchange pixel with max or min.
>>
>> I just don't know how to program it.
>> Any other hints?
>> Thank you.
>> Em 22/06/2013 04:24, "Jan Brocher - BioVoxxel" <
[hidden email]>
>> escreveu:
>>
>>> Hi Sidnei,
>>>
>>> There is a plugin called Image Edges from Thomas Boudier (I think it is
>>> not included in Fiji by default but available on the following site:
>>>
http://imagejdocu.tudor.lu/doku.php?id=plugin:filter:edge_detection:start>>> ).
>>> Another possibility would be the "Edges" in FeatureJ from Eric Meijering
>>> which enables you to suppress "halo" effects. To my knowledge both plugins
>>> apply Canny edge detection based algorithms.
>>>
>>> regards,
>>> Jan
>>>
>>>
>
>
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