visgrep(1) [debian man page]
VISGREP(1) General Commands Manual VISGREP(1) NAME
visgrep - Visual grep, greps for images in another image SYNOPSIS
visgrep [options] image.png detect.pat match.pat ... DESCRIPTION
visgrep is a program that greps for image in another image. All .pat files are created using png2pat(1) or rgb2pat(1). The image.png is scanned for detect.pat starting from X,Y given in parameters. When detect.pat is found, then all the match.pat files are scanned at an offset of x,y given in parameters. If a match is found, then vis- grep prints the x,y and index of the item. For example, image.png is a screenshot and match1.pat .. match5.pat are images of letters a to e. Each of these letters is enclosed in a blue box, so detect.pat is an image of the upper left corner of the box. This box is not included in the match*.pat files, so they are actually offset 5 pixels down and 4 pixels to the left. You might run it like this then: visgrep -x-4 -y5 image.png match_corner.pat match_a.pat match_b.bat ... Etc, with all matches listed. Now suppose the screen showed ace so visgrep might output: 10,10 0 50,10 2 90,10 4 Showing that match_a.pat (index 0) is at 10,10 on the screen. If no match is found even though the detection image is found, the index will be -1. OPTIONS
A summary of options is included below. -h Show summary of options. -x Set x offset for detection matching. -y Set y offset for detection matching. -X Start scanning at X. -Y Start scanning at Y. -t Set tolerance for 'fuzzy' matches, higher numbers are more tolerant. EXIT STATUS
0 at least one match was made. 1 no matches were made. 2 an error occured. SEE ALSO
pat2ppm(1), patextract(1), png2pat(1), rgb2pat(1), xte(1). AUTHOR
visgrep was written by Steve Slaven <bpk@hoopajoo.net>. This manual page was written by Aurelien Jarno <aurel32@debian.org>, for the Debian project (but may be used by others). April 20, 2004 VISGREP(1)
Check Out this Related Man Page
QUIZ(6) BSD Games Manual QUIZ(6) NAME
quiz -- random knowledge tests SYNOPSIS
quiz [-t] [-i file] [question answer] DESCRIPTION
The quiz utility tests your knowledge of random facts. It has a database of subjects from which you can choose. With no arguments, quiz displays the list of available subjects. The options are as follows: -t Use tutorial mode, in which questions are repeated later if you didn't get them right the first time, and new questions are presented less frequently to help you learn the older ones. -i Specify an alternative index file. Subjects are divided into categories. You can pick any two categories from the same subject. quiz will ask questions from the first cate- gory and it expects answers from the second category. For example, the command ``quiz victim killer'' asks questions which are the names of victims, and expects you to answer with the cause of their untimely demise, whereas the command ``quiz killer victim'' works the other way around. If you get the answer wrong, quiz lets you try again. To see the right answer, enter a blank line. Index and Data File Syntax The index and data files have a similar syntax. Lines in them consist of several categories separated by colons. The categories are regular expressions formed using the following meta-characters: pat|pat alternative patterns {pat} optional pattern [pat] delimiters, as in pat[pat|pat]pat In an index file, each line represents a subject. The first category in each subject is the pathname of the data file for the subject. The remaining categories are regular expressions for the titles of each category in the subject. In data files, each line represents a question/answer set. Each category is the information for the question/answer for that category. The backslash character (``'') is used to quote syntactically significant characters, or at the end of a line to signify that a continuation line follows. If either a question or its answer is empty, quiz will refrain from asking it. FILES
/usr/share/games/quiz The default index and data files. BUGS
quiz is pretty cynical about certain subjects. BSD
May 31, 1993 BSD