/// <summary>
/// 二值化
/// </summary>
/// <param name="img"></param>
/// <returns></returns>
public Bitmap ProcessImage2Value(Bitmap img)
{
var img1 = img;
//设置阈值为20（自定义）
int threshold = 15;
//获取设置的阈值，建议：白线30，黄线15
threshold = Convert.ToInt32(pulloverImageLimitValue);
string str = "";
//计算二值化
for (int i = 0; i < img1.Width; i++)
{
for (int j = 0; j < img1.Height; j++)
{
int pixelColor = img1.GetPixel(i, j);
Color mpixel = new Color(pixelColor);
//str += string.Format("{0},{1},{2},{3}", pixelColor.A, pixelColor.R, pixelColor.G, pixelColor.B)+"\r\n";
if (mpixel.R > threshold)
{
img1.SetPixel(i, j, Color.Rgb(255, 255, 255));
}
else
{
img1.SetPixel(i, j, Color.Rgb(0, 0, 0));
}
}
}
return(img1);
}
protected override void OnElementChanged(ElementChangedEventArgs <Slider> e)
{
base.OnElementChanged(e);
if (e.NewElement != null)
{
Control.ProgressDrawable.SetColorFilter(
new PorterDuffColorFilter(
Xamarin.Forms.Color.FromHex("#F50F76").ToAndroid(),
PorterDuff.Mode.SrcIn));
// Set Progress bar Thumb color
Control.Thumb.SetColorFilter(
Xamarin.Forms.Color.FromHex("#F50F76").ToAndroid(),
PorterDuff.Mode.SrcIn);
//Change height
//Control.ScaleY = 10;
GradientDrawable p = new GradientDrawable();
p.SetCornerRadius(10);
p.SetColor(Color.Rgb(0x70, 0xb2, 0x3f));
ClipDrawable progress = new ClipDrawable(p, GravityFlags.Left, ClipDrawableOrientation.Horizontal);
GradientDrawable background = new GradientDrawable();
background.SetColor(Color.Rgb(0xe0, 0xe0, 0xe0));
background.SetCornerRadius(10);
LayerDrawable pd = new LayerDrawable(new Drawable[] { background, progress });
Control.SetProgressDrawableTiled(pd);
}
}
//作者：aaaSoft
//日期：2009年12月11日
//论坛：http://www.scbeta.com/bbs
//说明：原创文章，转载请注明出处并保留作者信息
//===================
/// <summary>
/// 中值滤波算法处理
/// </summary>
/// <param name="bmp">原始图片</param>
/// <param name="bmp">是否是彩色位图</param>
/// <param name="windowRadius">过滤半径</param>
public Bitmap ColorfulBitmapMedianFilterFunction(Bitmap srcBmp, int windowRadius, bool IsColorfulBitmap)
{
if (windowRadius < 1)
{
throw new Exception("过滤半径小于1没有意义");
}
//创建一个新的位图对象
// Bitmap bmp = new Bitmap(srcBmp.Width, srcBmp.Height);
Bitmap bmp = Bitmap.CreateScaledBitmap(srcBmp, srcBmp.Width, srcBmp.Height, true);
//存储该图片所有点的RGB值
byte[,] mR, mG, mB;
int mA = -1;
mR = new byte[srcBmp.Width, srcBmp.Height];
if (IsColorfulBitmap)
{
mG = new byte[srcBmp.Width, srcBmp.Height];
mB = new byte[srcBmp.Width, srcBmp.Height];
}
else
{
mG = mR;
mB = mR;
}
mA = new Color(srcBmp.GetPixel(10, 10)).A;
for (int i = 0; i <= srcBmp.Width - 1; i++)
{
for (int j = 0; j <= srcBmp.Height - 1; j++)
{
mR[i, j] = new Color(srcBmp.GetPixel(i, j)).R;
if (IsColorfulBitmap)
{
mG[i, j] = new Color(srcBmp.GetPixel(i, j)).G;
mB[i, j] = new Color(srcBmp.GetPixel(i, j)).B;
}
}
}
mR = MedianFilterFunction(mR, windowRadius);
if (IsColorfulBitmap)
{
mG = MedianFilterFunction(mG, windowRadius);
mB = MedianFilterFunction(mB, windowRadius);
}
else
{
mG = mR;
mB = mR;
}
for (int i = 0; i <= bmp.Width - 1; i++)
{
for (int j = 0; j <= bmp.Height - 1; j++)
{
bmp.SetPixel(i, j, Color.Rgb(mR[i, j], mG[i, j], mB[i, j]));
}
}
return(bmp);
}
static PlatformColor FromRgb(int red, int green, int blue)
{
#if __ANDROID__
return(PlatformColor.Rgb(red, green, blue));
#else
return(PlatformColor.FromRGB(red, green, blue));
#endif
}
public static AColor ColorAtPoint(this Bitmap bitmap, int x, int y)
{
int pixel = bitmap.GetPixel(x, y);
int red = AColor.GetRedComponent(pixel);
int blue = AColor.GetBlueComponent(pixel);
int green = AColor.GetGreenComponent(pixel);
return(AColor.Rgb(red, green, blue));
}
protected override void OnElementChanged(ElementChangedEventArgs <Entry> e)
{
base.OnElementChanged(e);
if (Control == null || e.NewElement == null)
{
return;
}
Control.BackgroundTintList = ColorStateList.ValueOf(Color.Rgb(25, 54, 95));
Control.Background.SetColorFilter(Color.Rgb(25, 54, 95), PorterDuff.Mode.SrcAtop);
}
protected override void OnElementChanged(ElementChangedEventArgs <Picker> e)
{
base.OnElementChanged(e);
if (Control != null)
{
if (Build.VERSION.SdkInt >= BuildVersionCodes.Lollipop)
{
Control.BackgroundTintList = ColorStateList.ValueOf(Color.Rgb(199, 11, 9));
}
else
{
Control.Background.SetColorFilter(Color.Rgb(199, 11, 9), PorterDuff.Mode.SrcAtop);
}
}
}
protected override void OnElementChanged(ElementChangedEventArgs <Picker> e)
{
base.OnElementChanged(e);
Control.Background.SetColorFilter(Color.Rgb(244, 245, 246), PorterDuff.Mode.SrcAtop);
Control?.SetPadding(20, 20, 20, 20);
if (e.OldElement != null || e.NewElement != null)
{
var customPicker = e.NewElement as PickerRating;
Control.TextSize = 16;
if (customPicker != null)
{
Control.SetHintTextColor(Color.ParseColor(customPicker.PlaceholderColor));
}
}
}
public static AColor ColorAtPoint(this Bitmap bitmap, int x, int y, bool includeAlpha = false)
{
int pixel = bitmap.GetPixel(x, y);
int red = AColor.GetRedComponent(pixel);
int blue = AColor.GetBlueComponent(pixel);
int green = AColor.GetGreenComponent(pixel);
if (includeAlpha)
{
int alpha = AColor.GetAlphaComponent(pixel);
return(AColor.Argb(alpha, red, green, blue));
}
else
{
return(AColor.Rgb(red, green, blue));
}
}
void IMessage.ShortTime(string message)
{
var toast = Toast.MakeText(Android.App.Application.Context, message, ToastLength.Short);
toast.SetGravity(GravityFlags.Bottom, 0, 300);
//Color c = Color.Argb(100,0,100,0);
Color c = Color.Rgb(0, 255, 0);
ColorMatrixColorFilter CM = new ColorMatrixColorFilter(new float[]
{
0, 0, 0, 0, c.R,
0, 0, 0, 0, c.G,
0, 0, 0, 0, c.B,
0, 0, 0, 1, 0
});
toast.View.Background.SetColorFilter(CM);
toast.Show();
}
protected override void OnElementChanged(ElementChangedEventArgs <Entry> e)
{
base.OnElementChanged(e);
if (Control == null || e.NewElement == null)
{
return;
}
if (Build.VERSION.SdkInt >= BuildVersionCodes.Lollipop)
{
Control.BackgroundTintList = ColorStateList.ValueOf(Color.Rgb(25, 54, 95));
}
else
{
Control.Background.SetColorFilter(Color.Rgb(25, 54, 95), PorterDuff.Mode.SrcAtop);
}
}
/// <summary>
/// 灰度化
/// </summary>
/// <param name="img"></param>
/// <returns></returns>
public Bitmap GrayImage(Bitmap img)
{
//Bitmap curBitmap = img;
Bitmap curBitmap = Bitmap.CreateBitmap(img);
if (curBitmap != null)
{
int curColor;
int ret;
//二维图像数组循环
for (int i = 0; i < curBitmap.Width; i++)
{
for (int j = 0; j < curBitmap.Height; j++)
{
try
{
//读取当前像素的RGB颜色值
curColor = curBitmap.GetPixel(i, j);
Android.Graphics.Color mColor = new Color(curColor);
//利用公式计算灰度值（加权平均法）
ret = (int)(mColor.R * 0.299 + mColor.G * 0.587 + mColor.B * 0.114);
//设置该点像素的灰度值，R=G=B=ret
curBitmap.SetPixel(i, j, Color.Rgb(ret, ret, ret));
}
catch (Exception ex)
{
string str = ex.Message;
}
}
}
//return curBitmap;
}
Filter filter = new Filter();
//var img1 = new Bitmap(curBitmap, Imagewidth, Imageheight);
var img2 = filter.ColorfulBitmapMedianFilterFunction(curBitmap, 3, false);
return(img2);
}
protected override void OnLayout(bool changed, int l, int t, int r, int b)
{
base.OnLayout(changed, l, t, r, b);
var toolbar = FindViewById <Toolbar>(Resource.Id.toolbar);
if (toolbar == null)
{
return;
}
toolbar.SetBackgroundResource(Resource.Drawable.NavigationBarGradient);
//toolbar.SetNavigationIcon(Resource.Drawable.MenuIcon);
for (var i = 0; i < toolbar.ChildCount; i++)
{
var currentChild = toolbar.GetChildAt(i);
//var titleText = currentChild as TextView;
//titleText?.SetTypeface(Typefaces.FontRegular, TypefaceStyle.Normal);
//titleText?.SetElegantTextHeight(true);
//titleText?.SetTextSize(ComplexUnitType.Dip, 15);
//titleText?.SetX(150);
var imageButton = currentChild as ImageButton;
var drawerArrow = imageButton?.Drawable as DrawerArrowDrawable;
if (drawerArrow != null)
{
imageButton.SetColorFilter(Color.Rgb(103, 200, 207));
}
else
{
imageButton?.SetImageResource(Resource.Drawable.MenuIcon);
}
}
}
protected override void OnElementChanged(ElementChangedEventArgs <ProgressBar> e)
{
base.OnElementChanged(e);
var customProgressBar = Element as CustomProgressBar;
if (customProgressBar != null)
{
var scaleCoef = (float)customProgressBar.CustomScale;
}
Control.ProgressTintList = ColorStateList.ValueOf(Color.Rgb(182, 231, 233));
// //Change the color
Control.ScaleY = 1; //Changes the height
if (e.NewElement == null)
{
return;
}
if (Control != null)
{
UpdateBarColor();
}
}
protected override async void OnElementChanged(ElementChangedEventArgs <Page> e)
{
base.OnElementChanged(e);
var metrics = Resources.DisplayMetrics;
var activity = this.Context as Activity;
relativeLayout = new RelLayout(activity);
var relativeLayoutParams = new RelLayout.LayoutParams(
RelLayout.LayoutParams.MatchParent,
RelLayout.LayoutParams.MatchParent
);
// Create topTextView - "Scan QR code to swap contact info"
topTextView = new TextView(activity);
topTextView.Text = "Scan QR code to swap contact info";
topTextView.Gravity = GravityFlags.Center;
topTextView.SetTextColor(AColor.Rgb(38, 173, 230));
topTextView.TextSize = 14f;
topTextView.Typeface = Typeface.CreateFromAsset(Forms.Context.Assets, "OpenSans-Bold.ttf");
RelLayout.LayoutParams topTVLayoutParams = new RelLayout.LayoutParams(
RelLayout.LayoutParams.MatchParent,
RelLayout.LayoutParams.MatchParent
);
relativeLayout.AddView(topTextView, topTVLayoutParams);
/* * * * * * * * * * * * * * * * * * * * * * * * * * * */
/* Create the Barcode Picker View */
barcodePicker = new ScanditSDKBarcodePicker(activity, "EeQ6GjLtEeSWsF/zcFfsWC8RqIt/+skbdZJ/MWpLIR8");
barcodePicker.OverlayView.AddListener(this);
// disable all codes except QR for scanning
barcodePicker.Set1DScanningEnabled(false);
barcodePicker.Set2DScanningEnabled(false);
barcodePicker.SetCode128Enabled(false);
barcodePicker.SetCode39Enabled(false);
barcodePicker.SetCode93Enabled(false);
barcodePicker.SetDataMatrixEnabled(false);
barcodePicker.SetEan13AndUpc12Enabled(false);
barcodePicker.SetEan8Enabled(false);
barcodePicker.SetItfEnabled(false);
barcodePicker.SetMicroDataMatrixEnabled(false);
barcodePicker.SetUpceEnabled(false);
/* - * - * - * - * - * - * - */
barcodePicker.SetQrEnabled(true);
/* - * - * - * - * - * - * - */
RelLayout.LayoutParams bpLayoutParams = new RelLayout.LayoutParams(
RelLayout.LayoutParams.MatchParent,
RelLayout.LayoutParams.MatchParent
);
bpLayoutParams.AddRule(LayoutRules.CenterHorizontal);
relativeLayout.AddView(barcodePicker, bpLayoutParams);
/* * * * * * * * * * * * * * * * * * * * * * * * * * * */
/* Create the overlay view -- this is to cover the bottom part of the barcode scanner view */
overlay = new AView(activity);
overlay.SetBackgroundColor(AColor.White);
RelLayout.LayoutParams oLayoutParams = new RelLayout.LayoutParams(
RelLayout.LayoutParams.MatchParent,
RelLayout.LayoutParams.MatchParent
);
oLayoutParams.AddRule(LayoutRules.AlignParentBottom);
relativeLayout.AddView(overlay, oLayoutParams);
/* * * * * * * * * * * * * * * * * * * * * * * * * * * */
// Create bottomTextView - "Share your contact info"
bottomTextView = new TextView(activity);
bottomTextView.Text = "Share your contact info";
bottomTextView.Gravity = GravityFlags.Center;
bottomTextView.SetTextColor(AColor.Rgb(38, 173, 230));
bottomTextView.TextSize = 14f;
bottomTextView.Typeface = Typeface.CreateFromAsset(Forms.Context.Assets, "OpenSans-Bold.ttf");
RelLayout.LayoutParams bottomTVLayoutParams = new RelLayout.LayoutParams(
RelLayout.LayoutParams.MatchParent,
RelLayout.LayoutParams.MatchParent
);
relativeLayout.AddView(bottomTextView, bottomTVLayoutParams);
/* * * * * * * * * * * * * * * * * * * * * * * * * * * */
/* * * Generating QR code * * */
IBarcodeWriter barcodeWriter = new BarcodeWriter
{
Format = BarcodeFormat.QR_CODE,
Options = new ZXing.Common.EncodingOptions
{
Width = 175,
Height = 175
}
};
// TODO: temp code - move to view model
var service = TinyIoC.TinyIoCContainer.Current.Resolve <CouchbaseConnect2014.Services.ICouchbaseService> ();
var contactId = service.GetUserId();
var repo = TinyIoC.TinyIoCContainer.Current.Resolve <CouchbaseConnect2014.Services.IRepository> ();
var localUser = await repo.GetProfile();
// end of temp code
var qrContent = string.Format("{0},{1},{2}", contactId, localUser.First, localUser.Last);
var result = barcodeWriter.Write(qrContent);
qrImageView = new ImageView(activity);
qrImageView.SetImageBitmap(result);
RelLayout.LayoutParams qrLayoutParams = new RelLayout.LayoutParams(
RelLayout.LayoutParams.MatchParent,
RelLayout.LayoutParams.MatchParent
);
qrLayoutParams.AddRule(LayoutRules.CenterHorizontal);
relativeLayout.AddView(qrImageView, qrLayoutParams);
/* * * * * * * * * * * * * * * * * * * * * * * * * * * */
AddView(relativeLayout, relativeLayoutParams);
barcodePicker.SetScanningHotSpot(0.5f, 0.2f);
barcodePicker.OverlayView.SetViewfinderDimension(0.4f, 0.28f);
barcodePicker.OverlayView.SetTorchEnabled(false);
barcodePicker.StartScanning();
}
/// <summary>
/// 画轮廓
/// </summary>
/// <param name="img"></param>
/// <returns></returns>
public Bitmap DrawOutLine(Bitmap img)
{
string str = "";
//Color c1 = new Color(); // Represents an Rgb (alpha, red, green, blue) color.
//Color c2 = new Color();
//Color c3 = new Color();
//Color c4 = new Color();
int mc1; // Represents an Rgb (alpha, red, green, blue) color.
int mc2;
int mc3;
int mc4;
int rr, gg, bb, r1, r2, r3, r4, fxr, fyr;
int g1, g2, g3, g4, fxg, fyg, b1, b2, b3, b4, fxb, fyb;
Bitmap box1 = img;
//把图片框中的图片给一个bitmap类型// Encapsulates a GDI+ bitmap, which consists of the pixel data for a graphics
// image and its attributes.
for (int i = 0; i < Imagewidth - 1; i++)
{
for (int j = 0; j < Imageheight - 1; j++)
{
mc1 = box1.GetPixel(i, j);
// GetPixel(i, j) Gets the color of the specified pixel in this System.Drawing.Bitmap.
mc2 = box1.GetPixel(i + 1, j + 1);
mc3 = box1.GetPixel(i + 1, j);
mc4 = box1.GetPixel(i, j + 1);
Color c1 = new Color(mc1);
Color c2 = new Color(mc2);
Color c3 = new Color(mc3);
Color c4 = new Color(mc4);
r1 = c1.R;
r2 = c2.R;
r3 = c3.R;
r4 = c4.R;
fxr = r1 - r2;
fyr = r3 - r4;
rr = Math.Abs(fxr) + Math.Abs(fyr);
// Math.Abs(fyr) Returns the absolute value of a 32-bit signed integer.
if (rr < 0)
{
rr = 0;
}
if (rr > 255)
{
rr = 255;
}
g1 = c1.G;
g2 = c2.G;
g3 = c3.G;
g4 = c4.G;
fxg = g1 - g2;
fyg = g3 - g4;
gg = Math.Abs(fxg) + Math.Abs(fyg);
if (gg < 0)
{
gg = 0;
}
if (gg > 255)
{
gg = 255;
}
b1 = c1.B;
b2 = c2.B;
b3 = c3.B;
b4 = c4.B;
fxb = b1 - b2;
fyb = b3 - b4;
bb = Math.Abs(fxb) + Math.Abs(fyb);
if (bb < 0)
{
bb = 0;
}
if (bb > 255)
{
bb = 255;
}
Color cc = Color.Rgb(rr, gg, bb); //用FromRgb由颜色分量值创建Color结构
//str += string.Format("({0},{1},{2})", rr, gg, bb)+"\r\n";
//Color cc = Color.FromRgb(rr, rr, rr);//用FromRgb由颜色分量值创建Color结构.获得单色图像
// Color.FromRgb(rr, gg, bb) Creates a System.Drawing.Color structure from the specified 8-bit color values
// (red, green, and blue). The alpha value is implicitly 255 (fully opaque).
// Although this method allows a 32-bit value to be passed for each color component,
// the value of each component is limited to 8 bits.
box1.SetPixel(i, j, cc);
// box1.SetPixel(i, j, cc) Sets the color of the specified pixel in this System.Drawing.Bitmap.
//pictureBox6.Image = box1;
}
}
return(box1);
}
/// <summary>
///
/// </summary>
/// <param name="img">处理过后的图片</param>
/// <param name="OrialImg">原图（线画在原图上）</param>
/// <param name="msgInfo"></param>
/// <returns></returns>
public Bitmap DrawLine4(Bitmap map, Bitmap OrialImg, ref string msgInfo, ref int value)
{
try
{
value = 0;
AllLineSet = new List <Line>();
ValidLineSet = new List <Line>();
//记录整张图，每一行白色点坐标，一半张图的进行记录
List <List <Point> > Locations = new List <List <Point> >();
List <List <Point> > LinesPoints = new List <List <Point> >();
List <Point> OnelinePoint = new List <Point>();
//记录向下遍历的白点位置
List <int> RecordLocate = new List <int>();
newLinePoints = new List <Point>();
//var img2 = new Bitmap(map, Imagewidth, Imageheight);
var img2 = Bitmap.CreateScaledBitmap(map, Imagewidth, Imageheight, true);
//竖着遍历，一共4条,中间2条之间的距离，则是
//左边两条线
for (int i = 0; i < img2.Height; i++)
{
double whitePixs = 0;
List <Point> points = new List <Point>();
for (int j = 0; j < img2.Width * 2 / 3; j++)
{
var pix = img2.GetPixel(j, i);
Color tem = new Color(pix);
//白色
if (tem.A == 255 && tem.R == 255)
{
whitePixs++;
points.Add(new Point(j, i));
}
}
if (points.Count >= 1)
{
Locations.Add(points);
}
}
//未检测到车道
if (Locations.Count < img2.Height / 2)
{
value = 999;
msgInfo = "未检测到车道";
return(null);
}
int lastValue = -1;
int invalidCount = 0;
int OnelineMinX = 0;
//逐行比对，连续10行相差不超过3，则取其中一个点
#region 画第一条线
int mCount = 0;
int mStartCount = 0;
for (int i = 0; i < Locations.Count - 1; i++)
{
var temp = Locations[i];
var next = Locations[i + 1];
lastValue = lastValue < 0 ? next[0].X : lastValue;
if (Math.Abs(temp[0].X - lastValue) <= pixRange)
{
invalidCount = 0;
lastValue = temp[0].X;
mStartCount++;
RecordLocate.Add(i);
OnelinePoint.Add(temp[0]);
}
else
{
invalidCount++;
}
mCount = mStartCount > mCount ? mStartCount : mCount;
if (invalidCount >= rowRange)
{
OnelinePoint.Clear();
invalidCount = 0;
lastValue = -1;
}
if (RecordLocate.Count > 1 && Math.Abs(i - RecordLocate[RecordLocate.Count - 2]) > rowRange)
{
OnelinePoint.Clear();
invalidCount = 0;
lastValue = -1;
mStartCount = 0;
i = i - rowRange + 2;
i = i < 0 ? i + rowRange : i;
RecordLocate.Clear();
}
if (mStartCount >= validPointCount)
{
CalStraightLine(OnelinePoint);
OnelinePoint.Clear();
lastValue = -1;
RecordLocate.Clear();
linePoints.Add(temp[0]);
break;
}
}
#endregion
#region 画第2条线(新)
int increment = 15;
//根据配置来
//if (settings.PullOverRoadW == PullOverRoadWidth.Pullover10CM)
// increment = 10;
if (SpecifiedPointS.Count > 0)
{
Locations.Clear();
//去除第一条已经画过的线，重新计算图片
int a = img2.GetPixel(1, 1);
Color mC = new Color(a);
for (int i = 0; i < Imageheight; i++)
{
for (int j = 0; j < SpecifiedPointS[i].X + increment; j++)
{
img2.SetPixel(j, i, Color.Rgb(0, 0, 0));
}
}
// this.pictureBox2.Image = img2;
for (int i = 0; i < img2.Height; i++)
{
double whitePixs = 0;
List <Point> points = new List <Point>();
for (int j = 0; j < img2.Width * 2 / 3; j++)
{
var pix = img2.GetPixel(j, i);
Color tem = new Color(pix);
//白色
if (tem.A == 255 && tem.R == 255)
{
whitePixs++;
points.Add(new Point(j, i));
}
}
if (points.Count >= 1)
{
Locations.Add(points);
}
}
}
mStartCount = 0;
for (int i = 0; i < Locations.Count - 1; i++)
{
var temp = SpecifiedPointS.Count > 0
? Locations[i].ToArray()
: Locations[i].ToArray().Reverse().ToArray();
var next = SpecifiedPointS.Count > 0
? Locations[i + 1].ToArray()
: Locations[i + 1].ToArray().Reverse().ToArray();
lastValue = lastValue < 0 ? next[0].X : lastValue;
if (Math.Abs(temp[0].X - lastValue) <= pixRange)
{
invalidCount = 0;
lastValue = temp[0].X;
mStartCount++;
RecordLocate.Add(i);
OnelinePoint.Add(temp[0]);
}
else
{
invalidCount++;
}
mCount = mStartCount > mCount ? mStartCount : mCount;
if (invalidCount >= rowRange)
{
OnelinePoint.Clear();
invalidCount = 0;
lastValue = -1;
}
if (RecordLocate.Count > 1 && Math.Abs(i - RecordLocate[RecordLocate.Count - 2]) > rowRange)
{
OnelinePoint.Clear();
invalidCount = 0;
lastValue = -1;
mStartCount = 0;
i = i - rowRange + 2;
i = i < 0 ? i + rowRange : i;
}
if (mStartCount >= validPointCount)
{
CalStraightLine(OnelinePoint);
OnelinePoint.Clear();
lastValue = -1;
RecordLocate.Clear();
linePoints.Add(temp[0]);
break;
}
}
if (SpecifiedPointS.Count < 1)
{
msgInfo = "未检测到车道01";
return(null);
}
#endregion
#region 画右边部分车轮廓线
Locations.Clear();
//左边两条线
for (int i = 0; i < img2.Height; i++)
{
double whitePixs = 0;
List <Point> points = new List <Point>();
for (int j = img2.Width * 2 / 3; j < img2.Width; j++)
{
var pix = img2.GetPixel(j, i);
Color tem = new Color(pix);
//白色
if (tem.A == 255 && tem.R == 255)
{
whitePixs++;
points.Add(new Point(j, i));
}
}
if (points.Count >= 1)
{
Locations.Add(points);
}
}
mStartCount = 0;
for (int i = 0; i < Locations.Count - 1; i++)
{
var temp = Locations[i];
var next = Locations[i + 1];
lastValue = lastValue < 0 ? next[0].X : lastValue;
if (Math.Abs(temp[0].X - lastValue) <= pixRange)
{
invalidCount = 0;
lastValue = temp[0].X;
mStartCount++;
RecordLocate.Add(i);
OnelinePoint.Add(temp[0]);
}
else
{
invalidCount++;
}
if (invalidCount >= rowRange)
{
OnelinePoint.Clear();
invalidCount = 0;
lastValue = -1;
}
if (RecordLocate.Count > 1 && Math.Abs(i - RecordLocate[RecordLocate.Count - 2]) > rowRange)
{
OnelinePoint.Clear();
invalidCount = 0;
lastValue = -1;
mStartCount = 0;
i = i - rowRange + 2;
i = i < 0 ? i + rowRange : i;
}
if (mStartCount >= validPointCount)
{
CalStraightLine(OnelinePoint);
OnelinePoint.Clear();
lastValue = -1;
RecordLocate.Clear();
linePoints.Add(temp[0]);
break;
}
}
#endregion
//去除车裙边阴影
//3条线时，1-2条离太远，2-3条离太近
if (newLinePoints.Count > 5)
{
if (Math.Abs(newLinePoints[0].X - newLinePoints[2].X) > 70 &&
Math.Abs(newLinePoints[2].X - newLinePoints[4].X) < 30)
{
//去除第2条线
newLinePoints.RemoveAt(3);
newLinePoints.RemoveAt(2);
}
}
for (int i = 0; i < newLinePoints.Count - 1; i = i + 2)
{
ValidLineSet.Add(new Line(newLinePoints[i].X, newLinePoints[i].Y, newLinePoints[i + 1].X,
newLinePoints[i + 1].Y));
}
//using (Graphics g = Graphics.FromImage(OrialImg))
//{
// foreach (var line in ValidLineSet)
// {
// g.DrawLine(new Pen(Color.Red, 3), line.X1, line.Y1, line.X2, line.Y2);
// }
//}
if (ValidLineSet.Count < 2)
{
msgInfo = "检测到少于两条线，不进行距离计算";
return(null);
}
//计算车道到车边的距离
var uplist = newLinePoints.Where(x => x.Y == 0).ToArray();
var downlist = newLinePoints.Where(x => x.Y == img2.Height).ToArray();
//计算车道像素点（15cm）,上下两端取平均值
int width = Convert.ToInt32(((uplist[1].X - uplist[0].X) + (downlist[1].X - downlist[0].X)) / 2);
///车道的距离上下都大于50或者都小于10，则计算后的距离缩进一个车道
int offsetDistance = 0;
//必须检测到3条线后
if (uplist.Length > 2 && downlist.Length > 2)
{
if ((Math.Abs(uplist[1].X - uplist[0].X) > 50 && Math.Abs(downlist[1].X - downlist[0].X) > 50) ||
(Math.Abs(uplist[1].X - uplist[0].X) < 10 || Math.Abs(downlist[1].X - downlist[0].X) < 10))
{
//缩小10厘米
offsetDistance = 10;
}
}
//左边只有一根线的时候，设个默认值（由识别的标准车道获得40）
int lastwidth = width;
if (width < RoadWidth - 3 || width > RoadWidth + 3)
{
lastwidth = width;
width = RoadWidth;
}
Canvas canvas = new Canvas();
Paint paint = new Paint();
paint.StrokeWidth = 3;
//paint.TextSize=100;
Color mm = new Color(Color.Red);
paint.SetARGB(255, mm.R, mm.G, mm.B);
//bitmap = Bitmap.createBitmap(800, 480, Bitmap.Config.Rgb_8888); //设置位图的宽高,bitmap为透明
//canvas = new Canvas(bitmap);
//canvas.drawColor(Color.TRANSPARENT, PorterDuff.Mode.CLEAR);//设置为透明，画布也是透明
//canvas.DrawLine(0, 20, 750, 200, paint);
////在画布上贴张小图
//Bitmap bm = BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher);
//canvas.drawBitmap(bm, 0, 0, paint);
//画线
if (offsetDistance > 0)
{
canvas = new Canvas(OrialImg);
//平移10cm画线
int temp = 0;
int offdis = 0;
foreach (var line in ValidLineSet)
{
//第2条线进行右平移
if (temp == 1)
{
offdis = Convert.ToInt32(offsetDistance * pix);
}
//g.DrawLine(new Pen(Color.Red, 3), line.X1 + offdis, line.Y1, line.X2+ offdis, line.Y2);
canvas.DrawLine(line.X1 + offdis, line.Y1, line.X2 + offdis, line.Y2, paint);
temp++;
offdis = 0;
}
}
else
{
//正常画线
canvas = new Canvas(OrialImg);
foreach (var line in ValidLineSet)
{
//g.DrawLine(new Pen(Color.Red, 3), line.X1, line.Y1, line.X2, line.Y2);
canvas.DrawLine(line.X1, line.Y1, line.X2, line.Y2, paint);
}
}
//this.lblRoadWidth.Text = string.Format("当前检测到的车道宽度：{0},设定为：{1}", lastwidth, width);
//计算车道与车身的像素点最大相差
double upIncrement = Math.Abs(uplist[ValidLineSet.Count - 1].X - uplist[ValidLineSet.Count - 2].X);
double downIncrement = Math.Abs(downlist[ValidLineSet.Count - 1].X - downlist[ValidLineSet.Count - 2].X);
double maxIncrement = upIncrement > downIncrement ? upIncrement : downIncrement;
double minIncrement = upIncrement < downIncrement ? upIncrement : downIncrement;
//路宽15cm
int distance = Convert.ToInt32((maxIncrement / width) * increment);
int distance2 = Convert.ToInt32((minIncrement / width) * increment);
//按距离宽的一边的1/4位置进行计算，梯形计算X*1/4 +Y*3/4
var result = Convert.ToInt32((distance2 + distance * 3) / 4) - offsetDistance;
////再进行1.1倍缩放
//result = Convert.ToInt32(result*11/10);
value = result;
//msgInfo = string.Format("车身到路边线,最大距离为：{0}cm，最小距离：{1}cm，结果：{2}", distance, distance2,
// result.ToString("N1"));
msgInfo = string.Format("车身到路边线,距离：{0} cm", result.ToString("N1"));
return(OrialImg);
}
catch (Exception ex)
{
string msg = ex.Message;
}
return(null);
}
