File:Gold Spider SEM sample Sharp.jpg
Summary
Category:PNG created with MATLAB#Gold%20Spider%20SEM%20sample%20Sharp.jpg
| Description |
English: A spider coated in gold to prepare it as a specimen for Scanning electron microscopy. This item was on display at the Australian Museum in Sydney, New South Wales, Australia.
Example of using three 2D discrete convolutions to sharpen an image. The filter used is shown. |
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| Author |
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| Camera location |  | View this and other nearby images on: OpenStreetMap |  |
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Source code (MATLAB)
% Filters picture using 2D finite discrete convolution. By Tinos.
clear
% User Input
File='AuSpider.jpg';
% Input
Pic=double(imread(File));
% Create Filter
% Filt=fspecial('gaussian',10,1); % Blur
Filt=fspecial('unsharp'); % Sharp
% Filter image
Pic2(:,:,1)=conv2(Pic(:,:,1),Filt);
Pic2(:,:,2)=conv2(Pic(:,:,2),Filt);
Pic2(:,:,3)=conv2(Pic(:,:,3),Filt);
Pic2=Pic2(2:end-1,2:end-1,:);
% Convert to integer
Pic=uint8(Pic);
Pic2=uint8(Pic2);
% Output
imtool(Pic2)
imwrite(Pic2,'AuSpider2.jpg');
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This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Sharpened as example of convolution.. The original can be viewed here: Gold Spider SEM sample.jpg:  . Modifications made by MATLAB, Photoshop, Paint.
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I, the copyright holder of this work, hereby publish it under the following licenses:
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License. |
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Original upload log
This image is a derivative work of the following images:
- File:Gold_Spider_SEM_sample.jpg licensed with Cc-by-sa-3.0, GFDL
- 2010-03-15T04:26:21Z 99of9 2876x2159 (1865707 Bytes) {{Information |Description={{en|1=A spider coated in gold to prepare it as a specimen for [[w:Scanning electron microscope|Scanning electron microscopy]]. This item was on display at the Australian Museum in Sydney, New Sout
Uploaded with derivativeFX Category:Uploaded with derivativeFX
Category:Sputter coating Category:Scanning electron microscopic images of Araneae Category:Photographs by User:99of9 Category:Images with Matlab source code Category:Convolution Category:Australia photographs taken on 2011-02-25
Category:Australia photographs taken on 2011-02-25
Category:CC-BY-SA-3.0
Category:Convolution
Category:Files with coordinates missing SDC location of creation
Category:GFDL
Category:Images with Matlab source code
Category:License migration redundant
Category:PNG created with MATLAB
Category:Pages using deprecated source tags
Category:Pages with maps
Category:Photographs by User:99of9
Category:Retouched pictures
Category:Scanning electron microscopic images of Araneae
Category:Self-published work
Category:Sputter coating
Category:Uploaded with derivativeFX