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opencv模板匹配学习记录

由 ≯℡__Kan透↙ 提交于 2019-12-09 19:10:21
位置： D:\opencv\sources\modules\imgproc\src\templmatch.cpp 源码： void cv::matchTemplate( InputArray _img, InputArray _templ, OutputArray _result, int method, InputArray _mask ) { CV_INSTRUMENT_REGION() if (!_mask.empty()) { cv::matchTemplateMask(_img, _templ, _result, method, _mask); return; } int type = _img.type(), depth = CV_MAT_DEPTH(type), cn = CV_MAT_CN(type); CV_Assert( CV_TM_SQDIFF <= method && method <= CV_TM_CCOEFF_NORMED ); CV_Assert( (depth == CV_8U || depth == CV_32F) && type == _templ.type() && _img.dims() <= 2 ); bool needswap = _img.size().height < _templ.size().height || _img.size

jqGrid and JQuery UI tabs showing grids expanded only on primary tab (div)

由 ∥☆過路亽．° 提交于 2019-12-09 18:46:02
问题 I have added some grids (jqgrid) to a jQuery UI Tabs object. All the grids on the Tabs child that is expanded by default, displays perfectly. But the grids on the Tab children that are NOT expanded by default, permanently shows the jqGrid small (jqgrid with autowidth=true). Any ideas? Thanks! See http://www.revolucion7.com/wp-content/uploads/2009/10/jqgridp1.JPG On other words ... I have two tabs on a page with jqgrids on each one. Both jqgrids have autowidth property set, the problem is when

CentOS修改ulimit

由 一个人想着一个人 提交于 2019-12-09 17:29:38
一、概述 查看limit配置 # ulimit -a core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 7257 max locked memory (kbytes, -l) 64 max memory size (kbytes, -m) unlimited open files (-n) 1024 pipe size (512 bytes, -p) 8 POSIX message queues (bytes, -q) 819200 real-time priority (-r) 0 stack size (kbytes, -s) 8192 cpu time (seconds, -t) unlimited max user processes (-u) 7257 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited 其中最大进程数和最大文件打开数，需要修改一下。否则相关软件，无法启动。 二、永久生效的方法 环境说明 操作系统：centos 6.9 limits

Bootstrap: Fill whole container under navbar minus navbar height

由 冷暖自知 提交于 2019-12-09 15:25:27
问题 On a page styled with Twitter Bootstrap and using the navbar I wanted to fill the whole container below the navigation bar with a Google Maps map. To accomplish that I have added the CSS following below. I define for the html and body elements the sizes to 100% so that this is used for the map's size definition. This solution, however, yields one problem: The map's height is now the same as the whole page height, which results in a scroll bar which I can scroll for the 40px the navigation bar

Calculating size of Google Firestore documents

由 泪湿孤枕 提交于 2019-12-09 14:58:18
问题 Firestore docs give details of how to manually calculate the stored size of a document, but there does not seem to be a function provided for this on any of document reference, snapshot, or metadata. Before I attempt to use my own calculation, does anyone know of an official or unofficial function for this? Here is my (completely untested) first cut for such a function from my interpretation of the docs at https://firebase.google.com/docs/firestore/storage-size function calcFirestoreDocSize

Check if the content of a DIV is empty in jQuery

由 久未见 提交于 2019-12-09 14:33:04
问题 How do I use jQuery to check to see if the content of a <div> is empty? I tried this and is doesn't seem to be printing the correct values. ... var unframed_items = $("#unframed-items"); alert(unframed_items.html().length); ... <div id="unframed-items"> </div> ... 回答1: If you mean really empty, use the empty-selector[docs] : alert( !!$("#unframed-items:empty").length ) or alert( $("#unframed-items").is(':empty') ) If you consider whitespace-only to be empty, then use the jQuery.trim()[docs]

Qt Increase QTabWidget's QTabBar size

由 僤鯓⒐⒋嵵緔 提交于 2019-12-09 14:05:42
问题 I need to make the tabs that I have oriented at the bottom of my QTabWidget larger. We'll be using a touch-screen, so the default sizes are a little too small. I see no easy way to do this (currently seeing no good way to even do it at all. The only methods pertaining to the QTabBar that I see in QTabWidget are protected, and I don't see a need to inherit from the class other than for this express purpose). Question: What I'd like to do is to just set the QTabBar to a certain specific size.

How to solve java.lang.OutOfMemoryError: Java heap space error

由 吃可爱长大的小学妹 提交于 2019-12-09 13:53:01
问题 I am working in real time project. Working: I am getting data from twitter and moving the output to cassandra database and then using Testrestfull webservice i am getting the output in json format. And then finally outputs are displayed in wep page. i am using glass fish server to connect web service and web page. it is an real time project so i am refreshing my page in every 5 second. First few seconds i am not getting any error it works fine after 5 to 10 minutes i am getting this error in

C Question: why char actually occupies 4 bytes in memory?

由 匆匆过客 提交于 2019-12-09 13:27:50
问题 I wrote a small program to check how many bytes char occupies in my memory and it shows char actually occupies 4 bytes in memory. I understand it's mostly because of word alignment and don't see advantage of a char being only 1 byte. Why not use 4 bytes for char? int main(void) { int a; char b; int c; a = 0; b = 'b'; c = 1; printf("%p\n",&a); printf("%p\n",&b); printf("%p\n",&c); return 0; } Output: 0x7fff91a15c58 0x7fff91a15c5f 0x7fff91a15c54 Update: I don't believe that malloc will allocate

Is there any comparable alternative to Qt?

由 烂漫一生 提交于 2019-12-09 09:56:59
问题 I love the idea of Qt, however I use it not only for open source but closed source development. This isn't a real problem because I just license under the LGPL and distribute the DLLs needed. I've run into a problem though unfortunately. The compiled statically linked executable is 4.36 MB. Not too shabby. The compiled dynamically linked executable is 250 KB, however I also must include almost 35 MB in DLL files with the installation. This is REALLY tacky and no matter how I look at it I
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