TIFF16 image looks different in windows file viewer and MATLAB -

-

general problem description

i have 33 tiff16 images , want processing on them using matlab. reading them first step. after download image web , try read using matlab's imread (as tiff , read). display image using imshow. image displayed windows file viewer , matlab totally different. cannot process them since don't trust matlab has read them correctly. give more specifics of problem now.

edit: if helps, details of tiff16 images are: tiff (16 bits per channel, prophoto rgb color space, lossless compression)

more details:

i download image a0008-wp_crw_3959.tif. destination: go this link -> img0008 -> expert b (in case wants try, otherwise have screenshots below).

i read image in matlab using: img=imread('imgfilename.tif','tiff'); imshow(img,[]); or

t = tiff('imgfilename.tif','r'); imagedata = read(t); imshow(imagedata);

now, display snapshots of windows file viewer:

enter image description here

next, snapshot of matlab shows me:

enter image description here

now, have reason believe windows file viewer correct. go same link previous. scroll down img0008. hover mouse onto leftmost img0008. thumbnail view of expert b come looks same windows shows me.

does know how make matlab read , show tiff16 image correctly?

thank @markransom pointing me embedded color profile possibility. believe following solution correct , produces same output windows file viewer.

first read icc-color-profile using iccread command. 

i_rgb = imread('a0008-wp_crw_3959.tif'); outprof = iccread('srgb.icm'); p = iccread('a0008-wp_crw_3959.tif');

then convert image srgb profile using makecform , applycform:

c = makecform('icc',p,outprof); i_cmyk = applycform(i_rgb,c); imwrite(i_cmyk,'pep_cmyk.tif','tif') info = imfinfo('pep_cmyk.tif'); imshow('pep_cmyk.tif');

the original image saved on disk , new - pep_cmyk.tif - same windows file viewer.


Comments

Post a Comment

Popular posts from this blog

python - mat is not a numerical tuple : openCV error -

-
i have write down code showing error ma not getting it: please help: showing mat not numerical tuple: import cv import cv2 capture = cv2.videocapture("j.3gp") while(1): _, frame1 = capture.read() grayimage1 = cv2.cvtcolor(frame1, cv2.color_bgr2gray) _, frame2 = capture.read() grayimage2 = cv2.cvtcolor(frame2, cv2.color_bgr2gray) differenceimage = cv2.absdiff(grayimage1,grayimage2) thresholdimage = cv2.threshold(differenceimage,25,255,cv2.thresh_binary) cv2.imshow("difference image", differenceimage) cv2.imshow("threshold image", thresholdimage) cv2.imshow("image", frame1) k = cv2.waitkey(30) & 0xff error arising : ----------------------------------------------------------------------------------------- traceback (most recent call last): file "desk.py", line 15, in <module> cv2.imshow("threshold image", thresholdimage) typeerror: mat not numerical tuple
Read more

c# - MSAA finds controls UI Automation doesn't -

-
i'm working on automating windows application. i'm using teststack white framework. i've hit problem. program has 'window' object cannot see inside of. white shows no controls inside of it. inspect.exe shows no controls inside of either when running in ui automation mode. if switch inspect msaa see controls inside fine. there anyway me use msaa c# handle on these controls? if can identify msaa functions need, can use p/invoke call them c#. here's example article doing msaa: http://www.codeproject.com/articles/38906/ui-automation-using-microsoft-active-accessibility also, pinvoke.net can used identify iaccessible (msaa) functions: http://www.pinvoke.net/search.aspx?search=iaccessible&namespace=[all] here's answer along lines: msaa com-based? finally, alternative p/invoke, might able use tlbimp.exe create wrapper assembly oleacc.dll, , access msaa functions through it. i'm not sure if works msaa, it's worth try. as e
Read more

wordpress - .htaccess: RewriteRule: bad flag delimiters -

-
pulling hair out on one. have following .htaccess file custom redirects in addition wordpress's default settings. when tested on local wamp server worked fine after moving production i'm not getting rewriterule: bad flag delimiters error in server log , after while site goes down internal server error any appreciated. in advance! <ifmodule mod_rewrite.c> rewriteengine on rewritebase / rewriterule ^rockford_weddings___welcome\.html$ /wedding/ [r=301,l] rewriterule ^blog/?$ /journal/ [r=301,l] rewriterule ^blog/(.*)$ /$1 [r=301,l] rewriterule ^portraitinvestment/?$ /portraitinvestment\.pdf [r=301,l] rewriterule ^weddinginvestment/?$ /weddinginvestment\.pdf [r=301,l] rewriterule ^holidaycards2014/?$ /holidaycards2014\.pdf [r=301,l] </ifmodule> # begin wordpress <ifmodule mod_rewrite.c> rewriteengine on rewritebase / rewriterule ^index\.php$ - [l] rewritecond %{request_filename} !-f rewritecond %{request_filename} !-d rewriterule . /index.php [l] </
Read more