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2013-05-03 01:01:50 -0500 asked a question How can I find number of colours used in an image?


I am looking for simplest way to find number of colours is used to an image , and know what are those colours?

And another question , How can I convert an Image to an image with number of colours I want?

2013-05-03 00:55:19 -0500 asked a question How can I resize an image with OpenCV ?

Hi I am looking for a way to resizing an image in OpenCV? What is the simplest way to do it?

2013-03-16 08:36:38 -0500 asked a question Looking for the source of object recognition program like this

Is there the source of this program or some like it?

2013-03-16 06:27:05 -0500 commented answer Is there any programs to recognize objects?

Thanks a lot dear friend

I found a youtube movie it's exactly that I want .pls look at it and tell your opinion about what approach is used there and is there that program code's? or something like that?

2013-03-13 04:21:55 -0500 commented answer How can I work with pixels of an image directly?

Thanks a lot Daniil I will check it tomorrow and tell you about results(unfortunately today i cant)

2013-03-13 04:19:16 -0500 commented answer Is there any programs to recognize objects?

Can you explain above paragraph? Thank you in advance !

2013-03-13 04:18:05 -0500 commented answer Is there any programs to recognize objects?

Thanks a lot dear friend I didn't see the links since now but I will read them soon . My purpose is that I want to describe some objects for program (like car, tree , street lights ,etc) and when the camera see those (in every directions) the program can recognize them .

I think I understand whole of solution but I must read more about details and I think building the template models should be my approach , but i am not sure!

And also i couldn't understand your mean in this paragraph :

Some of these techniques depend on a large set of labeled images, assigning a class, then defining the nearest example to the new test image and feeding it the same label. Other techniques use tons of positive and negative object sampels to create a abstract model of how the item should look like.

2013-03-13 01:55:57 -0500 asked a question Is there any programs to recognize objects?


IS there any programs that can recognizing objects? I mean after a car was in front of the camera the program says car or after a bird did it , it says bird .

Also I want to know what is the name of this field of image processing or i can search what WORDs or PHRASEs for find more information or instruction for it?

Thanks a lot

2013-03-13 01:38:47 -0500 asked a question How can I work with pixels of an image directly?

Hi , I want to work with pixels of an image directly . For example , reading the pixel values(like R,G,B) or pixel locations(X,Y) and I can change them or write some functions to use of them .

How can i do that?

2013-02-18 13:19:32 -0500 commented answer configure opencv with Qt in linux

also i have 4 of each library in that direction . for example : libopencv_imgproc.a libopencv_imgproc.2.3.1

i must write which one in next of LIBS+= ....... ?

2013-02-18 12:31:55 -0500 commented answer configure opencv with Qt in linux

i had installed Qt with QtAssistant-QtCreator-QtSetting-QtLinguist from ubuntu-software-center

and i added this lines to my project .pro file :

INCLUDEPATH += /usr/include/opencv INCLUDEPATH += /usr/include/opencv2

LIBS += -L/usr/lib -lopencv_core -lopencv_highgui and etc

but i doesnt work still

2013-02-18 10:36:11 -0500 asked a question configure opencv with Qt in linux


i want to configure opencv2.3.1 that i have installed from ubuntu software center and the headers are in usr/include/opencv and the libraries are in usr/lib . i tried many ways and instructions but still i havent desired result.

i have some basically questions

1- we have two opencv folders . opencv and opencv 2 . what is the difference between those and when i write includepath i should write which one?

2-if i want to make a form like Visual studio forms with picturebox and some bottone and etc i must choose which one of the Qt prebuild such as (widget - console - application GUI i mean) ?

so sorry for my very bad english . if the questions are unclear tell me to more explain(although i think my questions are very simple and no need to explain)

thanks a lot

2013-02-13 10:29:14 -0500 asked a question using opencv in linux with which IDE and Compiler?


i want to use opencv in linux but i dont know which IDE and which compiler have pretty compatibility with that?

can you help me with your best comments?

2013-02-12 02:36:08 -0500 commented answer problems in opencv-2.4.3 installing in ubuntu12.04

thank you . but right now i dont know how can i do thise step :

Required Packages

    GCC 4.4.x or later. This can be installed with:

    sudo apt-get install build-essential

    CMake 2.6 or higher;


    GTK+2.x or higher, including headers (libgtk2.0-dev);


    Python 2.6 or later and Numpy 1.5 or later with developer packages (python-dev, python-numpy);

    ffmpeg or libav development packages: libavcodec-dev, libavformat-dev, libswscale-dev;

    [optional] libdc1394 2.x;

    [optional] libjpeg-dev, libpng-dev, libtiff-dev, libjasper-dev.

All the libraries above can be installed via Terminal or by using Synaptic Manager.

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2013-02-11 21:54:46 -0500 asked a question problems in opencv-2.4.3 installing in ubuntu12.04


i am beginner in linux and i have installed the ubuntu 12.04LT. i tried to install opencv from this guid : %3A Debian

but when i tried to instlall this line : sudo apt-get install libpnglite-dev libpngwriter0-dev libpngwriter0c2

i recived this errors :

Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package libpngwriter0-dev
E: Unable to locate package libpngwriter0c2