请教：如何获取24位BMP图片的RGB分量，我现在有一24位的BMP图片，现在想要将此图片的各个像素的RGB值保存为（R，G，B）形式的txt文本文档，如何实现？

2008-08-26 11:33:43 582 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

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LCD显示原理：从RGB信号到Framebuffer的硬件级解析 Framebuffer是Linux嵌入式图形显示的核心抽象，其本质是CPU与LCD控制器协同访问的一段物理内存；理解其工作原理需回归硬件层——RGB信号并非颜色数据，而是受严格时序约束的并行电压波形，直接决定像素时钟、同步极性及数据线映射关系。Framebuffer的stride对齐、像素格式（如RGB565）、分量偏移等参数，必须与LCD面板的物理接口规范和SoC控制器寄存器配置三重绑定。这一机制支撑着工业HMI、车载仪表、智能终端等对实时性与稳定性要求严苛的显示场景，而本文聚焦于RGB并行接口下从信号生阅读详情

请教：如何获取24位BMP图片的RGB分量，我现在有一24位的BMP图片，现在想要将此图片的各个像素的RGB值保存为（R，G，B）形式的txt文本文档，如何实现？

Private Declare Function GetObject Lib "gdi32" Alias "GetObjectA" (ByVal hObject As Long, ByVal nCount As Long, lpObject As Any) As Long

Private Declare Function GetBitmapBits Lib "gdi32" (ByVal hBitmap As Long, ByVal dwCount As Long, lpBits As Any) As Long

Private Declare Function GetDIBits Lib "gdi32" (ByVal aHDC As Long, ByVal hBitmap As Long, ByVal nStartScan As Long, ByVal nNumScans As Long, lpBits As Any, lpBI As BITMAPINFO, ByVal wUsage As Long) As Long

Private Declare Function SetDIBits Lib "gdi32" (ByVal hdc As Long, ByVal hBitmap As Long, ByVal nStartScan As Long, ByVal nNumScans As Long, lpBits As Any, lpBI As BITMAPINFO, ByVal wUsage As Long) As Long

Private Type BITMAP
bmType As Long
bmWidth As Long
bmHeight As Long
bmWidthBytes As Long
bmPlanes As Integer
bmBitsPixel As Integer
bmBits As Long
End Type

Private Type BITMAPINFOHEADER '40 bytes
biSize As Long
biWidth As Long
biHeight As Long
biPlanes As Integer
biBitCount As Integer
biCompression As Long
biSizeImage As Long
biXPelsPerMeter As Long
biYPelsPerMeter As Long
biClrUsed As Long
biClrImportant As Long
End Type

Private Type RGBQUAD
rgbBlue As Byte
rgbGreen As Byte
rgbRed As Byte
rgbReserved As Byte
End Type

Private Type BITMAPINFO
bmiHeader As BITMAPINFOHEADER
bmiColors As RGBQUAD
End Type

Private Const DIB_RGB_COLORS = 0 ' color table in RGBs

Private Sub Command1_Click()

Dim BITMAP As BITMAPINFO
Dim ImgData() As Byte
Dim lIndex As Long
Dim a As String
a = Text2.Text

With BITMAP
.bmiHeader.biSize = 40
End With

If GetDIBits(picture1.hdc, picture1.Picture.Handle, 0, 0, 0, BITMAP, DIB_RGB_COLORS) <> 0 Then '获取图像位图数据大小
ReDim ImgData(BITMAP.bmiHeader.biSizeImage / 3, 2)
If GetDIBits(picture1.hdc, picture1.Picture.Handle, 0, BITMAP.bmiHeader.biHeight - 1, ImgData(0, 0), BITMAP, DIB_RGB_COLORS) <> 0 Then

'ImgData(X,0)中保存的为蓝色分量值
'ImgData(X,1)中保存的为绿色分量值
'ImgData(X,2)中保存的为红色分量值
Point_x.Text = BITMAP.bmiHeader.biWidth
Point_y.Text = BITMAP.bmiHeader.biHeight

List1.Clear
For lIndex = 0 To BITMAP.bmiHeader.biSizeImage / 3

List1.AddItem ImgData(lIndex, 2) & ";" & ImgData(lIndex, 1) & ";" & ImgData(lIndex, 0)

Next

End If
End If
End Sub

这样list1中显示是否是我要的东西呢？但是好像又是不对的，请指教

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