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by: tjh |
last post by:
hi -
i'm a bit new to PHP - i've been messing around with the GD2 image functions
and was wondering:
i see a lot of information about converting a color image to grayscale but i
can't figure out how to determine whether an image (GIF or JPG) is grayscale
in the first place.
is there a way to do this in PHP?
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by: Java script Dude |
last post by:
In trying to speed up my web pages, I want to avoid using multiple
images (disabled, hover, nohover). I've currently got opacity working
on hover and it looks great and works in IE and Moz. But I now need a
grayscale filter to show the image as disabled.
Does anybody know of a Mozilla way of doing this. I know that
-moz-opacity works for mozilla, is there an equivalent for grayscale?
Thanks,
JsD
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by: QuasiChameleon |
last post by:
Hi,
I'm trying to create a grayscale image class that reads and writes
grayscale Targa format. This works well with smaller images, but
corrupts larger images and creates a "Segmentation fault (core dumped)"
error. I am at a loss as to why this works only part of the time.
I hope it's proper etiquette to post the code below (3 files).
Can someone please show me what's wrong with the following code? I
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by: tlemcenvisit |
last post by:
Hello
I translated this code (witch convert an image to grayscale) from C#.NET to
C++.NET
The C#.NET code is :
private void GrayScale(Bitmap b)
{
BitmapData bmData = b.LockBits(new Rectangle(0, 0, b.Width,
b.Height),ImageLockMode.ReadWrite,PixelFormat.Format24bppRgb);
int stride = bmData.Stride;
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by: Harry Simpson |
last post by:
I'm having trouble reducing the size of a bitmap programmatically: The file
size of the original is 2400k.
The picture is 816x1056. 16 million colors i think. I only need grayscale
render.
Public Sub ConvertBadBitmap(ByVal FilePath As String)
Dim objPicture As New Bitmap(816, 1056,
System.Drawing.Imaging.PixelFormat.Format16bppGrayScale)
objPicture = objPicture.FromFile(FilePath)
objPicture.Save("C:\ConvertPHOTO.bmp")
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by: Henry Wu |
last post by:
Hi I was at the search for making e.Graphics.DrawImage turn any image
to Grayscale, and I found two similar solutions but different
ColorMatrix values, what is the difference between the two? Is there
an industry standard for the GrayScale ColorMatrix values?
Thanks,
Henry
Solution #1, Jacob Grass:
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by: RicercatoreSbadato |
last post by:
I'm using bmp.Save() and the bmp is in PixelFormat.Format8bppIndexed.
But when I open the image with Gimp, it tells me that the image is RGB
and not grayscale.
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by: Brian L. Troutwine |
last post by:
I've recently begun to teach myself pygame by making a bunch of small
toys. My current toy is cellular automata displayer and I've gotten a
bit stuck on the displaying bit. (If automata isn't the plural of
automaton please forgive me.) The current automata are only binary and
are calculated using 2D Numeric arrays. It had been my assumption that
once the automata was calculated I could then multiply the entire
array by 255 to get a nice...
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by: platinumhimani |
last post by:
-How to convert any image(8,16,24,32 or 64-bit) to 8-bit grayscale
-i have tried to convert a 24-bit image to grayscale using setpixel
and getpixel functions, in vb.net
but i am unable to save that image in grayscale format.How do i do
that.It still saves in true color format.
-i used picturebox1.image.save() method
-i tried to convert an 8-bit image into grayscale but was unable to
do it.
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by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
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by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
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by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
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by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
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by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
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by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
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by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
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