Re: Verify an image and show it is color image or gray scale image.. - C# Discussion Boards

Verify an image and show it is color image or gray scale image..

Member 865231616-Feb-12 5:18

16-Feb-12 5:18

I want the code to load an image and it must show that, it is color image(or) gray scale image.. in a faster way..

Thanks,
Sukesh

Re: Verify an image and show it is color image or gray scale image..

PIEBALDconsult16-Feb-12 5:30

PIEBALDconsult

16-Feb-12 5:30

What's a gray scale image?

Gray is a color, so why not always report color? Big Grin | :-D

Re: Verify an image and show it is color image or gray scale image..

Maximilien16-Feb-12 5:48

Maximilien

16-Feb-12 5:48

Member 8652316 wrote:
in a faster way..

You will have to look at all the pixel colors, and it is not "fast".

One way to check if the image is grayscale, is if the RGB components of each pixel are equals to each other.

Red == Green == Blue.

M.

Watched code never compiles.

Re: Verify an image and show it is color image or gray scale image..

Member 865231617-Feb-12 1:21

Member 8652316

17-Feb-12 1:21

Thanks for your response i used this logic also.. but it is slow..

Re: Verify an image and show it is color image or gray scale image..

BobJanova16-Feb-12 6:28

BobJanova

16-Feb-12 6:28

Faster than what?
What do you mean by 'greyscale'?

Re: Verify an image and show it is color image or gray scale image..

Shameel16-Feb-12 7:50

Shameel

16-Feb-12 7:50

Member 8652316 wrote:
I want the code

Don't ask for code. Ask for ideas instead.

Re: Verify an image and show it is color image or gray scale image..

Pete O'Hanlon16-Feb-12 10:22

Pete O'Hanlon

16-Feb-12 10:22

I want Salma Hayek. We're both going to be disappointed tonight.

*pre-emptive celebratory nipple tassle jiggle* - Sean Ewington

"Mind bleach! Send me mind bleach!" - Nagy Vilmos

My blog | My articles | MoXAML PowerToys | Mole 2010 - debugging made easier - my favourite utility

Re: Verify an image and show it is color image or gray scale image..

JeremyBob17-Feb-12 1:11

JeremyBob

17-Feb-12 1:11

Simple google search reveals this:
http://stackoverflow.com/questions/1877405/detecting-grayscale-images-with-net[^]
I'm not saying its the best solution, but should put you on the right track. If I remember right its faster to stream through the image bytes using pointers than it is using GetPixel(), but you have to go into unsafe mode then.

which version of dll is used in GAC

tryharder16-Feb-12 4:33

tryharder

16-Feb-12 4:33

If I have several versions of the same DLL in the GAC which I always encounter.
When my application run, which version is selected to run if I did not specify which version of the dll to be used in the .net application.

Thanks.

Re: which version of dll is used in GAC

Soulus8316-Feb-12 5:13

Soulus83

16-Feb-12 5:13

When you specify a DLL in a project (web or windows) the version is also specified in there. I.E.:

HTML

<compilation> 
         <assemblies> 
            <add assembly="System.Data, Version=1.0.2411.0,  
                           Culture=neutral,  
                           PublicKeyToken=b77a5c561934e089"/> 
         </assemblies>
</compilation>

This is the version selected by your app.

"Whether you think you can, or you think you can't--either way, you are right." — Henry Ford

"When I waste my time, I only use the best, Code Project...don't leave home without it." — Slacker007

Re: which version of dll is used in GAC

PIEBALDconsult16-Feb-12 5:28

PIEBALDconsult

16-Feb-12 5:28

I don't think that answers the question. The question states, "if I did not specify which version"; what you show appears to specify the version.

I also notice that when I look at the properties of a reference (in VS) I can set Specific Version to true or false, I've always seen it as false, so which version will be used at run time?

Plus, as for me, I generally compile at the command line and don't use VS and its project files; so which version is used then?

Re: which version of dll is used in GAC

BobJanova16-Feb-12 6:27

BobJanova

16-Feb-12 6:27

I think it's the highest version which is compatible with the version of the .Net Framework you're compiling against.

Re: which version of dll is used in GAC

jschell16-Feb-12 12:19

jschell

16-Feb-12 12:19

You can of course actually get the version at run time. So you can run your app and then print it.

QMS development Question

Jassim Rahma16-Feb-12 2:48

Jassim Rahma

16-Feb-12 2:48

Hi,

I would like to know how to develop a QMS software (Queue management system) similar to the one used in banks and other companies.

It's basically a database application which I have no problem with it..

Also, I don't think there will be a problem displaying the queue on the screen as I am going to use VGA extender and display what every is showing on a Multimedia PC).

But my only concern is how to announce the number? so if the next is number 322 which supposed to go to room 5 it should be announ ced saying Ticket 322 Room no# 5

can anyone quide please..

Thanks in advance..

Re: QMS development Question

Pete O'Hanlon16-Feb-12 3:18

Pete O'Hanlon

16-Feb-12 3:18

Well, the easiest way is to have each number as a sound file and just play the relevant sound files.

*pre-emptive celebratory nipple tassle jiggle* - Sean Ewington

"Mind bleach! Send me mind bleach!" - Nagy Vilmos

My blog | My articles | MoXAML PowerToys | Mole 2010 - debugging made easier - my favourite utility

Re: QMS development Question

OriginalGriff16-Feb-12 3:39

OriginalGriff

16-Feb-12 3:39

To add to Pete reply, you could use the Speech Synthesis built into .NET:

SpeechSynthesizer speak = new SpeechSynthesizer();
speak.SpeakAsync("Number 322 please go to room 5");

You will need a reference to "System.Speech" and a using System.Speech.Synthesis statement.
It isn't perfect, but it is understandable!

Ideological Purity is no substitute for being able to stick your thumb down a pipe to stop the water

python and C#

lune1216-Feb-12 2:09

lune12

16-Feb-12 2:09

I have a script in python.
I would like to call it from a winform in C#, is it possible? and how?

Thanks

Re: python and C#

Luc Pattyn16-Feb-12 2:17

Luc Pattyn

16-Feb-12 2:17

If it works for you from a "command prompt", then Process.Start() can handle it.

Smile | :)

Luc Pattyn [My Articles] Nil Volentibus Arduum

Re: python and C#

lune1216-Feb-12 2:20

lune12

16-Feb-12 2:20

Thanks.

and if I want to call a single function from the script, is there a way?

Re: python and C#

Luc Pattyn16-Feb-12 2:21

Luc Pattyn

16-Feb-12 2:21

If you know how to do it from a "command prompt", then Process.Start() can handle it.

Smile | :)

Luc Pattyn [My Articles] Nil Volentibus Arduum

Re: python and C#

lune1216-Feb-12 2:29

lune12

16-Feb-12 2:29

no I don't know, can you explain please

Re: python and C#

Luc Pattyn16-Feb-12 2:35

Luc Pattyn

16-Feb-12 2:35

I can not.

Smile | :)

Luc Pattyn [My Articles] Nil Volentibus Arduum

Re: python and C#

candogu16-Feb-12 2:37

candogu

16-Feb-12 2:37

I think you can. Because from Csharp we can call another dll's functions by importing them with DllImport. However your python script should be a dll that registered to the system once Wink | ;)

Re: python and C#

lune1216-Feb-12 3:14

lune12

16-Feb-12 3:14

do you know how can I turn the python script into a dll.
Or should I forward the question to the phyton forum?

Re: python and C#

candogu17-Feb-12 0:36

candogu

17-Feb-12 0:36

I don't know how to do that but, if you know what that pyhon script do, you can write it yourself in csharp as a dll file.

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