Problem 1199. ASCII art
Convert a grayscale image to ASCII
Inputs:
- img: Grayscale image (a matrix of values between 0 and 1)
- chars: Char array of valid ascii characters
- bitmap: Grayscale images of each valid ascii character (3d matrix with size Height x Width x N, and with values between 0 and 1)
Output:
Bin the original image img into segments of size Height x Width, and find the best matching ascii character for each bin (minimizing the euclidean distance between each bin grayscale values and the matching character grayscale values).
Return the fitted ascii image: a matrix of characters in chars that, when displayed, approximates the image img.
_____ QQÊÊÊÊþ¿_ gÊÊÊÊÊÊÊÊÊþ qÊÊÊÊÊÊÊÑÑÊÊg_ `` _ÊÊÊþÎÊÊ ¾ºÜÑÑÑ®½g ````` gQQQQQØÊÊÊÑÊQQ¸ ¸»gÊÃ@Q©ÑmM `````` _ØÊÊÊÊÊÊÊÊÊþ°ÑÊÊQ©Ñ ÊÊÊÊÊQ____g ` ```` _gÊÊÊÊÊÊÊÊÊÊÊÊQQQÊÊÊ ÎÊÊÊQÊþ¯¯¯¯ ```` gØÊÊÊÊÊÊÊÊÊÊÊÊÊÊþÊÊÊÊÑ×,_ÎÊίÊÊÊ ``` _ØÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊQQÊQgÊÊ`¯° ¸QÊ `````; gÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊgÊÊÊÊþ_¿__gʯ ` `;»» ÆÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊQQÊÊÊÊÊÊÊÊÊÊÊÊ_ ````»» ÑÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊØÊÊÊÊÊÊÊÊ_ÿ_ÑÊÊà ³³^ `»» ¯ÑÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÑÊÊÑþ · ```» ÆÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÑÊ ÊÑÊþ · ```» ÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊʯÑÊÊÊÊ Êþ `;» gÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊ qÊÃÊ ` QÊþ · :` ``` QgQ¿¸ gÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊ ÊÑ Ê ` qÑÑÊÿ · ;`` `:` ÑÑÑÑ©¸ ¸ qÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊʯ qÊÎ Î ¨ ÑÑîÑʸ · »»¨² ` ¸¸¸¸¸ QQQ¿ggQQÊQÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊà »»qþþ Î » . ,¡Êþ_¿¿q»¿ jQ_` _QQÿgQ ÑÑÑÑÑÑÑÑÑÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÑÑÑÑÊQÑÊÑ_ÎÑQQQQjÊþþÊÑþQQÊÊÊÊg¿_ _g©ÑÑÑÊÊÑÑ Ñ»©QQÿ©©QÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊ°``¨qÊfQÊýÑQþ`©ÑÜÑÑÊþÊÑQÊÑÑÑÑÑÊÑÑ©©ÑÑÑÑÑÊÊÊÊÊ Ñ©©ÑÑÑ©QÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÜλ¯ÊÑÑÿ.Ê ÎÎÑ»¯ÜÜÎÑÊþÎÎβ²²¨²¨²²»»»»ÎÎÎÎÎÎÎÑ ©`²Î¨ÎÎÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÑ»»»qÊQÿ »Ê ©Q©©Ñ»²©©ÑÊþQQQQQQQQQQQQ©©©©©©©©QQ ©©Q©©ÑÑÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊ©©©©ÊÊÊ°QQÊ Q©Q©QQQ¿ÜÑÊþÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ ©Ü©©^»²©ÑÑÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊѸ¨¸QÊMÿQQÑ Ñ»©»©Î»»Q¸ÜÊþQÑÑ©©ÑÑ©©©©ÜÑÑÑÑÑÑÑÑÑ ©»»»QQѩλÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊ»»»ÎØѳ;Ñ»©©»¸¨²²²©©Ñ©Ñh¯Ê_©»QQÑ©ÑÑQÑQÑÑÑÑÑÑÑÑQ ©QQîQ©»Q;»ÊÊÑÊÊÊÊÊÊÊÊÊÊÊÊÑQQ¿_ÊÃÊÜ©QQÑQQQ©Î^QÎÑQQQ©ÑÊþ©©ÑÑ©Ñ©Ñ©ÑÑÑÑQQQQQQ Ñ©ÜÑÎÎÜÎÎÜÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊQQÑÑQʽÑÑÑÑQQQQ©Q»Î뽩¯Ñ¨²ÑÊQÎÎÜÑÑÑÑÑÑÑÑQÑÑÑÑÑÑ ÑÑÜÑÑÑÑÑÎQÊÊÊÊÊÊÑÊÊÊÊÊÊÊÑÑÑÑÑÑÊ#Ñ©ÑÑQQÑÑ©©©Ñ»½©©©©©QQÊѽÑÑÑÑÑÑQÑÑÜÑQÑÑÑÑÑ ÑQQÑQ©Ñ©©ÑÊÊÊÊÊÊÑÊÑÊÊÊÊѽ»ÑÑÑÎ ¯©QQ©Ñ©©ÿ©©ÑÑ©ÿѽ½ÑѽÑÑq ýÿ©QÑ©Ñ©ÑÑ©©ÑÑÑ©Q ÑÜj©Q©QÎQQÊÊÊÊÊÊ¿ÊÊÊÊÊÊÑ©©©©Q° »Q©©Î©Q©QQQ©ÑÑÑQΩÑÑ©Ñ©ÑÀ`ÑÑÑÑÑÑ©ÑÑÑÑÑÑÜQQ QQÑ3ÑQQÑÑQÊÊÊÊÊÑ2QÊÊÊÊÊþQQ©©Ê ¸ÑÑ©©©Q©ÑQÑQ©ÑQÑÑ©QÑÑÑQQÑÑ¿³ÑÑÑÑ©ÑÑÑÑÑÑQÑQÑ ©ÑÑÑQÑQ©ÑQÊÊÊÊÊQÿÑÊÊÑÑÊÊÑÑQÑÊ ÎQ©ÑÑQÑÜÑÑQÑÑÜÑÑQQQÿQQÑ©ÑQÑ¿ÎQQÿQQÑQÊÑÑQÑQÑ
note: for an appropriate display the display font needs to be monospace. If a char image does not fit within the command window, you may try the following to display it on a figure:
fontsize=6; figure; uicontrol('style','text','units','norm','position',[0,0,1,1],'string',str,... 'fontweight','bold','horizontalalignment','left','fontname','monospaced',... 'foregroundcolor','k','backgroundcolor','w','fontsize',fontsize);
and edit the value fontsize so that the image fits within the figure.
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