Use of the memory analysis tool MAT and the memory analysis tool mat
1. troubleshooting of Memory leakage
The Dalvik Debug Monitor Server (DDMS) is part of the ADT plug-in. There are two functions available for memory check:
· Heap view heap allocation
· Allocation tracker tracks memory allocation
The two DDMS functions help you find Memory leakage operations.
Eclipse Memory Analysis Tools (
From: http://blog.csdn.net/yang_xian521/article/details/7161335
The procedure for ordinary youth is usually M. at J)
Young people generally walk through the M. PTR I) [J]
Violent Young People usually use the M. Data Pointer I mentioned in 40th directly.
The experiment code is as follows:
t = (double)getTickCount();Mat img1(1000, 1000, CV_32F);for (int i=0; i
The last two tricks can be regarded as a method for violent youth, because they are all p
How to read and write and store matlab data files in python (*. mat), python. mat
Background
In the deeplearning process, caffe framework is used, and matlab is generally used to process images (matlab is relatively simple and efficient to process images ), use python to generate the required lmdb file and perform test to generate the result. Therefore, some label information obtained by matlab from image p
We know that Mat is an image container class, a data structure consisting of two parts: the head of the matrix-the data stored in the space created by class objects instantiated by class mat classes---is the information of this matrix, when we use Mat object to declare class objects, It just creates a mat header and do
In the Android Performance Optimization Chapter (a)---basic concepts of Java's four references, said Gcroot, the second memory monitor detect memory leaks only said Menmery monitor use, this blog talk about mat to find memory leaks, In contrast, Memory Monitor is not mat strong, but before the introduction of Mat, two of the questions did not make it clear that f
1--We know Mat is an image container class, this data structure consists of two parts: 1--Matrix Header------------------------------------------------- Just created a mat header and did not create a matrix, that is to say, we did not open up the corresponding space for the image to be stored 2--matrix header-Contains: the size of the 1--matrix----such as---class mat
Use mat to compare multiple heap dump filesWhen debugging memory leaks, it is sometimes useful to compare 2 or more heap dump files in a timely manner. You need to generate multiple separate hprof files.Here are some things about how to compare multiple heap dumps in a mat (a little more complex):1. First hprof file (Usingfile > Open Heap Dump).2. Open histogram view.Watermark/2/text/ahr0cdovl2jsb2cuy3nkbi5
The converted single component person model has good detection results, while the three-component person model in voc2007 2009 has very poor detection results. It may be because opencv does not support mixed model loading. (I only care about the person detection, so I only tested the effect of model conversion of person)
% Jelly 2013-08-12 % Convert *. Mat format model in the source example in % discriminatively trained deformable part models "voc-
---restore content starts---In OpenCV, the mat (two-dimensional) corresponds to a two-dimensional array, assigning each pixel value in the mat to a two-dimensional array.The full code is as follows:#include #include#include//contains identifiers such as Imread, imshow, etc.#include"opencv2/imgproc/imgproc.hpp" //includes Cvtcolor, etc.using namespacestd;using namespaceCV;//Test MatvoidMain5 () {//Read in Im
I remember the beginning of contact with OPENCV is because an algorithm inside a 2-dimensional dynamic array, then look at the core this part is also a cursory, with the increase in use, the structure of the mat more and more like, also feel the need to warm so that the new, so this time to see the mat.
The biggest advantage of mat and STL very similar, are the m
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#include #include using namespace Std;using namespace CV;String tbarname1 = "Block:";Defines two slider bars for adjusting parametersString tbarname2 = "W:";W is to keep part of the fogint block = 5;int w1 = 95;Double w = (double) w1/100;
Mat:
The matrix header contains the size of matrices;A pointer contains the values in the matrix. To create a mat:
Mat M (2,2,cv_8uc3,scalar (0,0,125));
Note: 2,2 represents matrix size;
CV_8UC3 says
Cv_[the number of bits per itrm][signed or Unsigned][type prefix]c[the channel number];
Scalar (0,0,125) represents the initial value.
Use the Create () function
M.
Perm GenAs we know in 2 articles, Perm Gen is a heterogeneous store of class and method data (related to class loader) and interned strings (string dwell). There is not too much Perm gen information in the heap dump. So let's use that little bit of information to solve the problem.Look at the code below and use interned strings to burst the perm Gen./*** Oompermtest Class* @author Rosen Jiang*/Package org.rosenjiang.test;public class Oompermtest {public static void Main (string[] args) {Oom ();}
1. Install the Eclipse Mat plugin1) View current Eclipse versionGo to eclipse Directory: Right-click the Eclipse icon to see the installation directory/home/zhangshuli/adt-bundle-linux-x86_64-20140702/eclipse/eclipseEnter Directory,/home/zhangshuli/adt-bundle-linux-x86_64-20140702/eclipse/eclipse/readme/redme_eclipse.htmlDouble-click to see version information: Release 4.2.0corresponding versionAttached: Introduction to various releases of Eclipse (Ht
@author YHC
Some time ago did a project, Exception in thread "main" Java.lang.OutOfMemoryError:Java heap
This error occurs, so you need to find the reason, so use this tool, installation is more troublesome, posted out and share with you:
First step: Download Eclipse MAT
Download Address: http://www.eclipse.org/mat/downloads.php
The second step: after downloading the compressed package decompression, place
reproduced from: http://www.xuebuyuan.com/2148247.html
OpenCV One of the matrix classes: Mat
Summary
The mat class can be viewed as a matrix class in the C + + version of OpenCV, replacing the original C-version matrix structure Cvmat and the image structure iplimage;
Mat's biggest advantage with STL compatibility is very good, there are many similar to STL operation. But
Label: style blog http io color ar OS(I see a very good article about the relationship between opencv internal classes .)Common data containers related to image operations in opencv include Mat, cvMat, and IplImage. These three types can represent and display images. However, Mat types focus on computing, the mathematics is high, and the calculation of Mat type i
OPENCV Study Notes (2): The initialization of the mat matrixCategory: OpenCV c++/vs2008 2012-05-24 18:42 3896 People read review (0) Favorite report float programming C
When studying the initialization of the mat matrix, it was found that it could not be initialized directly using an array, as in the case of the mATX lightweight matrix, but rather by using an internal variable type: scalar. The constructor
Common Data containers related to image operations in opencv include mat, cvmat, and iplimage. These three types can represent and display images. However, mat types focus on computing, the mathematics is high, and the calculation of Mat type is also optimized by opencv. The cvmat and iplimage types focus more on "Images". opencv optimizes image operations (such
OpenCV basics-Mat data structure and opencv BasicsProcedure and Analysis
/* * FileName : MatObj.cpp * Author : xiahouzuoxin @163.com * Version : v1.0 * Date : Thu 15 May 2014 09:12:45 PM CST * Brief : * * Copyright (C) MICL,USTB */#include
Mat is the most basic data structure of OpenCV. Mat is the abbreviation of Matrix.
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