vb.net如何識(shí)別某一張圖片的主要顏色，例如隨圖片的更換某些控件改變相應(yīng)的顏色圖片背景搭配？

有挑戰(zhàn)。

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我的想法是采集每一個(gè)像素點(diǎn)的顏色，把R、G、B的值累加，然后取平均就得到一個(gè)平均的顏色。像Bitmap類等可以獲取每一個(gè)像素點(diǎn)的顏色。

VB.NET設(shè)置屏幕分辨率、顏色位數(shù)、刷新率 實(shí)例代碼

這篇文章介紹了VB.NET設(shè)置屏幕分辨率、顏色位數(shù)、刷新率

實(shí)例代碼，有需要的朋友可以參考一下

復(fù)制代碼

代碼如下:

Private

Declare

Function

GetDeviceCaps

Lib

"gdi32"

(ByVal

hdc

As

Long,

ByVal

nIndex

As

Long)

As

Long

Private

Declare

Function

ChangeDisplaySettings

Lib

"user32"

Alias

"ChangeDisplaySettingsA"

(lpDevMode

As

Any,

ByVal

dwflags

As

Long)

As

Long

Private

Const

CCDEVICENAME

As

Long

=

32

Private

Const

CCFORMNAME

As

Long

=

32

Private

Const

DM_BITSPERPEL

As

Long

=

H40000

Private

Const

DM_PELSWIDTH

As

Long

=

H80000

Private

Const

DM_PELSHEIGHT

As

Long

=

H100000

Private

Const

DM_DISPLAYFLAGS

As

Long

=

H200000

Private

Const

DM_DISPLAYFREQUENCY

=

H400000

Private

Const

CDS_FORCE

As

Long

=

H80000000

Private

Const

BITSPIXEL

As

Long

=

12

Private

Const

HORZRES

As

Long

=

8

Private

Const

VERTRES

As

Long

=

10

Private

Const

VREFRESH

=

116

Private

Type

DEVMODE

dmDeviceName

As

String

*

CCDEVICENAME

dmSpecVersion

As

Integer

dmDriverVersion

As

Integer

dmSize

As

Integer

dmDriverExtra

As

Integer

dmFields

As

Long

dmOrientation

As

Integer

dmPaperSize

As

Integer

dmPaperLength

As

Integer

dmPaperWidth

As

Integer

dmScale

As

Integer

dmCopies

As

Integer

dmDefaultSource

As

Integer

dmPrintQuality

As

Integer

dmColor

As

Integer

dmDuplex

As

Integer

dmYResolution

As

Integer

dmTTOption

As

Integer

dmCollate

As

Integer

dmFormName

As

String

*

CCFORMNAME

dmUnusedPadding

As

Integer

dmBitsPerPel

As

Integer

dmPelsWidth

As

Long

dmPelsHeight

As

Long

dmDisplayFlags

As

Long

dmDisplayFrequency

As

Long

End

Type

Private

Sub

cmdChangeDesktopMode_Click()

Dim

DM

As

DEVMODE

With

DM

.dmPelsWidth

=

CInt(txtNewWidth.Text)

.dmPelsHeight

=

CInt(txtNewHeight.Text)

.dmBitsPerPel

=

CInt(txtNewColor.Text)

.dmDisplayFrequency

=

CInt(txtNewFreq.Text)

.dmFields

=

DM_PELSWIDTH

Or

DM_PELSHEIGHT

Or

DM_BITSPERPEL

Or

DM_DISPLAYFREQUENCY

.dmSize

=

LenB(DM)

End

With

If

ChangeDisplaySettings(DM,

CDS_FORCE)

Then

MsgBox

"錯(cuò)誤!不支持此模式！"

End

If

End

Sub

Private

Sub

Form_Load()

txtOldWidth.Text

=

GetDeviceCaps(Me.hdc,

HORZRES)

txtOldHeight.Text

=

GetDeviceCaps(Me.hdc,

VERTRES)

txtOldColor.Text

=

GetDeviceCaps(Me.hdc,

BITSPIXEL)

txtOldFreq.Text

=

GetDeviceCaps(Me.hdc,

VREFRESH)

End

Sub

vb.net 如何對(duì)圖片實(shí)現(xiàn)顏色識(shí)別

沒(méi)明白你意思,看看是這樣么?Dim PGet As System.Drawing.Graphics = System.Drawing.Graphics.FromImage(picture)for i=1 to picture.heightfor j=1 to picture.widthPGet .GetPixel(j, i)nextnext

在vb.net中，如何獲取Graphics中某一指定點(diǎn)（像素）的顏色值？（VB語(yǔ)言）

要使用GetPixel函數(shù)來(lái)取得像素的顏色值，代碼如下：

1

2

3

4

5

private void button1_Click(object sender, EventArgs e)

{

Color color = new Bitmap(pictureBox1.Image).GetPixel(10, 10);

MessageBox.Show(color.ToString());

當(dāng)前標(biāo)題：vb.net像素顏色 vb 顏色
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