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Sonstiges >> Off Topic > phyton??? o.0

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|LR|Cooper

19.11.2011 um 20:53

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Clan: Dumme Dorfbauern
Postings: 885

Mal ne Frage an die Cracks hier im Verein oder auch sonst wo... kann jemand von euch Phyton programmieren? Hab hier folgende Aufgabe und kein Plan:

Video-Konverter haben die Aufgabe, Einzelbilder eines Videodatenstroms einzulesen und in ein anderes
Format zu transportieren. Beispielsweise kann ein unkomprimiertes Video als Quelle dienen welches
dann in ein MPG-Video gewandelt wird. Zu Beginn m¨ussen diese Konverter-Programme oftmals eine
Farbraumtransformation vornehmen. In dieser Aufgabe sollen RGB-Einzelbilder in den YUV-Farbraum
konvertiert werden.
Schreiben Sie hierzu ein Python-Programm welches ein BMP-Bild (im RGB-Modus) einlesen kann und
zeilenweise die Farbwerte der einzelnen Pixel in RGB ausgibt. Berechnen Sie nun f¨ur die einzelnen Pixel
die YUV-Werte und geben Sie diese ebenfalls aus.
Benutzen Sie dazu folgende N¨aherung:
y = r * 0:299000 + g * 0:587000 + b * 0:114000
u = r * -0:168736 + g * -0:331264 + b * 0:500000 + 128
v = r * 0:500000 + g * -0:418688 + b * -0:081312 + 128
Was bewirkt der Summand 128?

Jemand der sich auskennt und helfen kann?
__________________
#LANrena Neustetten e.V. - Mitglied
#LANrena - Pixelschubbser
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dotDatabase::connect -> d030eee4@localhost 0.033357 - dotDatabase::select -> database: d030eee4 0.033636 - dotDatabase::query -> SELECT `code` FROM `country_ip2code` WHERE 3628718236 BETWEEN ip_from AND ip_to 0.047415 - dotSession::start -> update current session online user infos 0.047461 - dotDatabase::query -> UPDATE session SET lastactivity = 1774349878, userid = 0, site = 'https://lanrena.christoph-raible.de/forum/thread/1237', host = '216.73.216.156', dns = '216.73.216.156', countrycode = 'US', hits = hits + 1 WHERE hash = '3c5d71ad1b25e0c0231cea8e789ee43d' 0.047901 - dotSession::start -> no session found in db == insert new db sesssion 0.047945 - dotDatabase::query -> INSERT INTO `session`SET hash = '3c5d71ad1b25e0c0231cea8e789ee43d', lastactivity = 1774349878, userid = 0, site = 'https://lanrena.christoph-raible.de/forum/thread/1237', referer = '', useragent = 'Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)', host = '216.73.216.156', dns = '216.73.216.156', countrycode = 'US', hits = 1 0.048149 - 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admin::getInstance -> do 0.059892 - admin::hasRight -> check for adminright: >0:0 & 32< FALSE 0.059901 - admin::getInstance -> do 0.059914 - admin::hasRight -> check for adminright: >0:0 & 16777216< FALSE 0.059921 - admin::getInstance -> do 0.059932 - admin::hasRight -> check for adminright: >0:0 & 64< FALSE 0.059939 - admin::getInstance -> do 0.059951 - admin::hasRight -> check for adminright: >0:0 & 32< FALSE 0.059964 - admin::getInstance -> do 0.059976 - admin::hasRight -> check for adminright: >0:0 & 16777216< FALSE 0.059983 - admin::getInstance -> do 0.059995 - admin::hasRight -> check for adminright: >0:0 & 64< FALSE 0.060016 - dotCommon::classload -> require: /www/htdocs/w00f1046/includes/class.html.php 0.061171 - dotDatabase::query -> SELECT title FROM forum_cat WHERE catid=3 0.061759 - dotDatabase::query -> UPDATE forum_thread SET hits=hits+1 WHERE threadid='1237' 0.062004 - dotDatabase::query -> SELECT user_id FROM user_orga WHERE display_team=1 0.062634 - FORUM::showthread -> query all postings 0.062655 - 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dotDatabase::query -> SELECT codetag, codereplacement, twoparams FROM html_code 0.065511 - HTML::encode -> replace run 1 0.065710 - HTML::encode -> replace run 2 0.065833 - HTML::template -> template: >forum_postingpart< 0.065956 - HTML::template -> template: >forum_postingindex< 0.066031 - FORUM::showthread -> check for moderator utils 0.066043 - FORUM::update_visit -> forumid: 6 threadid: 1237 posttime: 2011-11-19 20:53:42 0.066076 - GLOBAL::end userspace -> --------------------------------------------- 0.066083 - PAGE::render -> start rendering page layout 0.066089 - USER::check_for_new_messages -> return 0.066100 - dotSession::getInstance -> do 0.066131 - PAGE::get_boxes -> -------- side=left 0.066149 - dotCommon::classload -> require: /www/htdocs/w00f1046/includes/class.cbox.php 0.067317 - PAGE::get_boxes -> -------- call: left::menu_main 0.067335 - CBOX::menu -> generate Menu Box >news< 0.067351 - HTML::template -> template: >box_menu< 0.067438 - HTML::template_exists -> search: >page_box_left< == 1 0.067463 - HTML::template -> template: >page_box_left< 0.067522 - PAGE::get_boxes -> -------- call: left::menu_site 0.067534 - CBOX::menu -> generate Menu Box >site< 0.067548 - HTML::template -> template: >box_menu_bit< 0.067598 - HTML::template -> template: >box_menu_bit< 0.067616 - HTML::template -> template: >box_menu_bit< 0.067632 - HTML::template -> template: >box_menu_bit< 0.067647 - HTML::template -> template: >box_menu_bit< 0.067661 - HTML::template -> template: >box_menu_bit< 0.067676 - HTML::template -> template: >box_menu< 0.067702 - HTML::template_exists -> search: >page_box_left< == 1 0.067721 - HTML::template -> template: >page_box_left< 0.067741 - PAGE::get_boxes -> -------- call: left::menu_verein 0.067750 - CBOX::menu -> generate Menu Box >verein< 0.067762 - HTML::template -> template: >box_menu_bit< 0.067779 - HTML::template -> template: >box_menu_bit< 0.067793 - HTML::template -> template: >box_menu_bit< 0.067807 - HTML::template -> template: >box_menu_bit< 0.067822 - HTML::template -> template: >box_menu_bit< 0.067836 - HTML::template -> template: >box_menu< 0.067860 - HTML::template_exists -> search: >page_box_left< == 1 0.067878 - HTML::template -> template: >page_box_left< 0.067898 - PAGE::get_boxes -> -------- call: left::menu_event 0.067906 - CBOX::menu -> generate Menu Box >event< 0.067918 - HTML::template -> template: >box_menu_bit< 0.067934 - HTML::template -> template: >box_menu_bit< 0.067948 - HTML::template -> template: >box_menu_bit< 0.067963 - HTML::template -> template: >box_menu_bit< 0.067977 - HTML::template -> template: >box_menu_bit< 0.067991 - HTML::template -> template: >box_menu_bit< 0.068006 - HTML::template -> template: >box_menu_bit< 0.068024 - HTML::template -> template: >box_menu_bit< 0.068039 - HTML::template -> template: >box_menu_bit< 0.068054 - HTML::template -> template: >box_menu< 0.068078 - HTML::template_exists -> search: >page_box_left< == 1 0.068100 - HTML::template -> template: >page_box_left< 0.068120 - PAGE::get_boxes -> -------- call: left::menu_login 0.068128 - CBOX::menu -> generate Menu Box >login< 0.068146 - HTML::template -> template: >box_menu_bit< 0.068163 - HTML::template -> template: >box_menu_bit< 0.068177 - HTML::template -> template: >box_menu< 0.068202 - HTML::template_exists -> search: >page_box_left< == 1 0.068218 - HTML::template -> template: >page_box_left< 0.068241 - PAGE::get_boxes -> -------- side=right 0.068265 - PAGE::get_boxes -> -------- call: right::party 0.068275 - CBOX::party -> generate Box 0.068285 - EVENT::short_event -> id >17< 0.068291 - EVENT::getevent -> id >17< 0.068299 - dotDatabase::query -> SELECT events.id, active, invite, password, events.name, anzahl, preis, konto, kontocheck, UNIX_TIMESTAMP(kontocheck) AS kontocheck_unix, event_location.name AS location, event_location.zip AS plz, event_location.city AS ort, event_location.street AS strasse, event_location.countrycode, location_id, map_template, allow_signoff, voraussetzung, minalter, turnier, netzwerk, weiteres, banner, UNIX_TIMESTAMP(begin) AS begin, UNIX_TIMESTAMP(end) AS end, UNIX_TIMESTAMP(signupbegin) AS sgbegin, UNIX_TIMESTAMP(signupend) AS sgend, UNIX_TIMESTAMP(seatreservebegin) AS seatbegin, UNIX_TIMESTAMP(seatreserveend) AS seatend, seatimage, UNIX_TIMESTAMP(canceled) AS canceled, archiv_gallery, archiv_media FROM events LEFT JOIN event_location ON event_location.id=location_id WHERE events.id=17 AND active=1 0.068502 - dotCommon::classload -> require: /www/htdocs/w00f1046/includes/class.cache.php 0.068780 - CACHE::get -> cache: >event_17::stats< found 0.068845 - HTML::template -> template: >box_event< 0.068955 - HTML::template_exists -> search: >page_box_right< == 1 0.068980 - HTML::template -> template: >page_box_right< 0.069038 - PAGE::get_boxes -> -------- call: right::forum 0.069051 - CBOX::forum -> generate forum box 0.069057 - CBOX::forum_load_threads -> load data 0.069071 - CACHE::get -> cache: >forum::topthreads< found 0.069181 - CBOX::forum_threads -> list all threads in array 0.069195 - FORUM::thread_lastvisit -> threadid: array ( 0 => 2510, 1 => 2509, 2 => 2499, 3 => 2502, 4 => 2508, 5 => 2507, 6 => 2506, 7 => 1919, 8 => 2505, 9 => 2485, 10 => 2503, 11 => 2501, 12 => 2500, 13 => 2496, 14 => 2498, 15 => 2497, 16 => 2495, 17 => 2493, 18 => 2494, 19 => 2445, ) 0.069214 - admin::getInstance -> do 0.069242 - HTML::template -> template: >box_forum_bit< 0.069340 - HTML::template -> template: >box_forum_bit< 0.069382 - HTML::template -> template: >box_forum_bit< 0.069423 - HTML::template -> template: >box_forum_bit< 0.069457 - HTML::template -> template: >box_forum_bit< 0.069493 - HTML::template -> template: >box_forum_bit< 0.069515 - HTML::template -> template: >box_forum< 0.069592 - HTML::template_exists -> search: >page_box_right< == 1 0.069614 - HTML::template -> template: >page_box_right< 0.069643 - PAGE::get_boxes -> -------- call: right::vote 0.069654 - CBOX::vote -> generate Box 0.069660 - dotDatabase::query -> SELECT v_id, UNIX_TIMESTAMP(v_ende) AS v_ende FROM vote_main WHERE v_start < NOW() AND v_ende > NOW() AND v_active=1 AND v_top=1 ORDER by v_start DESC 0.069919 - HTML::template -> template: >box_vote_nocurrent< 0.070015 - HTML::template_exists -> search: >page_box_right< == 1 0.070040 - HTML::template -> template: >page_box_right< 0.070070 - PAGE::get_boxes -> -------- call: right::banner 0.070092 - CACHE::get -> cache: >sponsoren_7::cbox_lanrenav3.de_DE< found 0.070138 - HTML::template_exists -> search: >page_box_right< == 1 0.070159 - HTML::template -> template: >page_box_right< 0.070185 - PAGE::get_boxes -> -------- call: right::search 0.070195 - CBOX::template -> generate Box with >box_suchen< as template 0.070201 - HTML::template -> template: >box_suchen< 0.070270 - HTML::template_exists -> search: >page_box_right< == 1 0.070289 - HTML::template -> template: >page_box_right< 0.070317 - PAGE::render -> final 0.070324 - PAGE::renderTemplate -> page 0.070331 - PAGE::getHead -> return 0.070336 - dotSession::getInstance -> do 0.070439 - HTML::template -> template: >page< 0.070624 - PAGE::render_template -> final PHP Includes : 19 DB Queries : 22 Rendering Time : 0.071093 Includes PHP Files: - /www/htdocs/w00f1046/forum/index.php - /www/htdocs/w00f1046/global.php - /www/htdocs/w00f1046/includes/class.dotCommon.php - /www/htdocs/w00f1046/config.php - /www/htdocs/w00f1046/includes/class.dotDatabase.php - /www/htdocs/w00f1046/includes/class.page.php - /www/htdocs/w00f1046/includes/class.dotSession.php - /www/htdocs/w00f1046/includes/class.user.php - /www/htdocs/w00f1046/includes/class.styles.php - /www/htdocs/w00f1046/html/styles/lanrenav3.php - /www/htdocs/w00f1046/includes/class.admin.php - /www/htdocs/w00f1046/includes/class.prvmsg.php - /www/htdocs/w00f1046/includes/class.event.php - /www/htdocs/w00f1046/includes/class.sitzplan.php - /www/htdocs/w00f1046/html/styles/lr.inc.php - /www/htdocs/w00f1046/includes/class.forum.php - /www/htdocs/w00f1046/includes/class.html.php - /www/htdocs/w00f1046/includes/class.cbox.php - /www/htdocs/w00f1046/includes/class.cache.php

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