No, it will not cut-off at 255. It will give the correct result*** without overflow error. The user's strategy of choice can then be used to map the values of the output image to the [0 255] range, e.g., using ThresholdImageFilter to set values above 255 to 255. <div>
<br></div><div>***Correct result is defined as the summation of two unsigned 8-bit numbers. </div><div><br><div class="gmail_quote">On Tue, May 24, 2011 at 11:30 AM, <span dir="ltr"><<a href="mailto:dominique@toepfer-web.de">dominique@toepfer-web.de</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div>Hi,<br><br>would float as output type really give you a "cut-off" at 255? I don't know if there is a filter for that, but you could use image iterators and take care of the correct values yourself.<br>
<br>HTH<br>Dominique<br><br><table width="100%"><tbody><tr><td bgcolor="blue" width="5"> </td><td>
<div>Set the output image to that of floating point pixels. That should get you the correct values.</div>
<br><div class="gmail_quote">2011/5/24 Quan <span><<a href="mailto:mrvillage@163.com" target="_blank">mrvillage@163.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<div>hello everyone,</div>
<div>i got a problem when using AddImageFilter.I want to keep the pixel-wise=255 (for my 8-bits scale images),when the overflow happens ,but the AddImageFilter's has such a description </div>
<div> <b>Warning:</b> </div>
<dl><dd> No numeric overflow checking is performed in this filter. </dd></dl>
<div>i add the segmented contour image(pixels on the contour = 255) and the original image.while i use the AddImageFilter,the overflow happens and i cannot get a meaningful outcome.
<div>how can i manage it,does any member function of this class provide any method that is responble to the overflow?</div>
</div>
<p>thanks in advance.</p>
<p>Quan</p>
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