우주여행가의 우주여행기

newstring = strrep(orgstring, word1,word2)

strrep 함수는 orgstring에서 word1을 찾아서 word2로 바꾸어 newstring에 저장한다.

예제)

str1 = 'lonesome';

str2 = strrep(str1,'lone', 'awe');

결과 str2 = 'awesome'

 STRREP Replace string with another.

    MODIFIEDSTR = STRREP(ORIGSTR,OLDSUBSTR,NEWSUBSTR) replaces all 

    occurrences of the string OLDSUBSTR within string ORIGSTR with the

    string NEWSUBSTR.

    Notes:

    * STRREP accepts input combinations of single strings, strings in 

      scalar cells, and same-sized cell arrays of strings. If any inputs 

      are cell arrays, STRREP returns a cell array. 

    * STRREP does not find empty strings for replacement. That is, when

      ORIGSTR and OLDSUBSTR both contain the empty string (''), STRREP does

      not replace '' with the contents of NEWSUBSTR.

    Examples:

    % Example 1: Replace text in a character array.

        claim = 'This is a good example';

        new_claim = strrep(claim, 'good', 'great')

        new_claim = 

        This is a great example.

    % Example 2: Replace text in a cell array.

        c_files = {'c:\cookies.m'; ...

                   'c:\candy.m';   ...

                   'c:\calories.m'};

        d_files = strrep(c_files, 'c:', 'd:')

        d_files = 

            'd:\cookies.m'

            'd:\candy.m'

            'd:\calories.m'

    % Example 3: Replace text in a cell array with values in a second cell

    % array.

        missing_info = {'Start: __'; ...

                        'End: __'};

        dates = {'01/01/2001'; ...

                '12/12/2002'};

        complete = strrep(missing_info, '__', dates)

        complete = 

            'Start: 01/01/2001'

            'End: 12/12/2002'

    See also strfind, regexprep.

    Reference page in Help browser

       doc strrep

http://videolectures.net/eccv2012_firenze/

ECCV 2012 비디오 강의

https://www.coursera.org/

http://ocw.mit.edu/index.htm   (MIT)

http://www.udacity.com/

https://www.coursera.org/course/cs101  (Stanford Computer Science 101)

https://www.coursera.org/course/algo (design and analysis of algorithm)

1. 이미지의 모든 픽셀을 0으로 초기화 할 경우

IplImage* img;

img = cvCreateImage(cvSize(640,480),IPL_DEPTH_8U,1);

cvSetZero(img);

2. 이미지의 모든 픽셀을 임의의 값으로 초기화 할 경우

IplImage* img;

img = cvCreateImage(cvSize(640,480),IPL_DEPTH_8U,1);

cvSet(img,cvScalarAll(100),0);  // 이미지의 모든 픽셀값이 100으로 초기화  , R=G=B=100

http://www.robots.ox.ac.uk/~vgg/research/vgoogle/

http://www.ipol.im/pub/algo/my_affine_sift/

http://www.cmap.polytechnique.fr/~yu/research/ASIFT/demo.html

http://www.vision.caltech.edu/malaa/software/research/image-search/