argb

How change the white skin face to dark skin face in iOS?

由 笑着哭i 提交于 2019-12-12 01:32:45
问题 I need to change the white skin face to dark skin face... For example American white face to African face(i.e color tone)... I pick the color value of the pixel by digital color meter it gives the RGB value[red=101,green=63 and blue=43] for dark skin and for white skin it gives the RGB value as [red=253,green=210 and blue=176]... Then i am setting that value in my code it gives the false result... Here is my code... -(UIImage*)customBlackFilterOriginal { CGImageRef imgSource=self

AS3 - Find the most abundant pixel colour in BitmapData

由 元气小坏坏 提交于 2019-12-11 05:56:07
问题 Basically, I want to get the most common ARGB value that appears in a BitmapData . That is, I want to know which exact pixel colour is the most abundant in the image. I tried going through every pixel of the image and counting whenever a colour that already exists comes up, but that's way too slow, even with relatively small images. Does anybody know a faster method for this, maybe using the BitmapData.histogram() function or something? Ideally the process should be near instantaneous for

C# How do I convert my get GetPixel / SetPixel color processing to Lockbits?

由 落花浮王杯 提交于 2019-12-07 19:07:54
问题 EDIT: I deeply appreciate the replies. What I need more than anything here is sample code for what I do with the few lines of code in the nested loop, since that's what works right in GetPixel/SetPixel, but also what I can't get to work right using Lockbits. Thank you I'm trying to convert my image processing filters from GetPixel / SetPixel to Lockbits, to improve processing time. I have seen Lockbits tutorials here on Stack Overflow, MSDN, and other sites as well, but I'm doing something

C# How do I convert my get GetPixel / SetPixel color processing to Lockbits?

由 半世苍凉 提交于 2019-12-06 09:58:38
EDIT: I deeply appreciate the replies. What I need more than anything here is sample code for what I do with the few lines of code in the nested loop, since that's what works right in GetPixel/SetPixel, but also what I can't get to work right using Lockbits. Thank you I'm trying to convert my image processing filters from GetPixel / SetPixel to Lockbits, to improve processing time. I have seen Lockbits tutorials here on Stack Overflow, MSDN, and other sites as well, but I'm doing something wrong. I'm starting with an exceedingly simple filter, which simply reduces green to create a red and

Implementing ToArgb()

由 拟墨画扇 提交于 2019-12-05 16:43:25
问题 System.Drawing.Color has a ToArgb() method to return the Int representation of the color. In Silverlight, I think we have to use System.Windows.Media.Color. It has A, R, G, B members, but no method to return a single value. How can I implement ToArgb()? In System.Drawing.Color, ToArgb() consists of return (int) this.Value; System.Windows.Media.Color has a FromArgb(byte A, byte R, byte G, byte B) method. How do I decompose the Int returned by ToArgb() to use with FromArgb()? Thanks for any

Implementing ToArgb()

由 ≡放荡痞女 提交于 2019-12-04 02:16:01
System.Drawing.Color has a ToArgb() method to return the Int representation of the color. In Silverlight, I think we have to use System.Windows.Media.Color. It has A, R, G, B members, but no method to return a single value. How can I implement ToArgb()? In System.Drawing.Color, ToArgb() consists of return (int) this.Value; System.Windows.Media.Color has a FromArgb(byte A, byte R, byte G, byte B) method. How do I decompose the Int returned by ToArgb() to use with FromArgb()? Thanks for any pointers... Short and fast. Without an extra method call, but with fast operations. // To integer int iCol

Creating 8 bit image from byte array

由 狂风中的少年 提交于 2019-12-02 02:43:54
问题 The byte array is obtained this way - BufferedImage image = new Robot().createScreenCapture(new Rectangle(screenDimension)); byte[] array = ((DataBufferByte)getGraycaleImage(image).getRaster().getDataBuffer()).getData(); // Method getGraycaleImage returns a grayscaled BufferedImage, it works fine now how do i reconstruct this grayscale image from the byte array? I don't know much about ARGB, RGB or grayscale images. I tried this - private Image getGrayscaleImageFromArray(byte[] pixels, int

Creating 8 bit image from byte array

由 好久不见. 提交于 2019-12-02 00:55:08
The byte array is obtained this way - BufferedImage image = new Robot().createScreenCapture(new Rectangle(screenDimension)); byte[] array = ((DataBufferByte)getGraycaleImage(image).getRaster().getDataBuffer()).getData(); // Method getGraycaleImage returns a grayscaled BufferedImage, it works fine now how do i reconstruct this grayscale image from the byte array? I don't know much about ARGB, RGB or grayscale images. I tried this - private Image getGrayscaleImageFromArray(byte[] pixels, int width, int height) { int[] pixels2=getIntArrayFromByteArray(pixels); MemoryImageSource mis = new

ARGB Hex color not working in css html

由 丶灬走出姿态 提交于 2019-11-30 17:08:06
Why is this ARGB hex not working? <td style="background-color: #FFFF9980"> Use rgba(255,153,128,1.0) instead of your hex value (though if that really is ARGB it's the same as #ff9980 in RGB - if you meant RGBA then you'll need rgba(255,255,153,0.5) ). the CSS3 spec says: Unlike RGB values, there is no hexadecimal notation for an RGBA value. so you will have to use the rgba(255,153,128,1.0) mentioned above. ARGB Hex color RGBA color values are an extension of RGB color values with an alpha channel - which specifies the opacity for a color. An RGBA color value is specified with: rgba(red, green,

What are differences between RGB vs RGBA other than 'opacity'

由 不羁岁月 提交于 2019-11-30 11:42:04
I have moved beyond using standard colors in CSS by declaring them orange , blue , aquamarine , etc..., and have been using rgb() like so for the same colors respectively, rgb(255,165,0) , rgb(0,0,255) and rgb(127,255,212) (thanks to the ColorHighlighter package in ST3). Upon altering a gradient for bootstrap .btn I came across rgba() . Quick research explains that a stands for alpha , and theres a whole bunch of integral math attributed to Catmull and Smith . It is also somewhat easy to find that the alpha channel is used for "alpha compositing", which can mostly be associated as "opacity".
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