「砂絵フィルタを作りたいんだけど」の編集履歴（バックアップ）一覧に戻る
砂絵フィルタを作りたいんだけど - (2010/05/23 (日) 14:21:36) のソース
このページは失敗作フィルタを掲載しています。
絵によっては面白い結果が出るのですが、絵によってはでたらめな絵にしか見えなくなる使用可能範囲の狭いフィルタでした。
砂絵フィルタのテスト
最初の絵が左上、右上がフィルタ一回、左下がフィルタ2回、右下がフィルタ3回適用結果です。
&ref(自分で作った画像処理ソフトの力はこの程度だったsono7.png)
このイラストはPixivイラストＩＤ 10471204を元に作成しました。
その他のフィルタ適用後イラスト
&ref(自分で作った画像処理ソフトの力はこの程度だったsono6.png)
おまけ話
このフィルタ連続適用すると、爆発に巻き込まれたような絵を作れます。
元写真 http://jp.123rf.com/photo_2996333.html
元写真 http://www.kimikame.net/blog/2008/05/
をしよう。
-以下フィルタサンプルコード
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace WindowsFormsApplication2
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
Bitmap b1 = new Bitmap(pictureBox1.Image); // 変数の宣言
//pictureBox1.Image =b1;
PictToCircle PTC = new WindowsFormsApplication2.PictToCircle();
//PTC.changeCircle(b1);
b1=PTC.changePictToLine(b1);
//b1 = (PTC.getPict());
pictureBox1.Image = b1;
//b1.Dispose();
}
private void pictureBox1_Click(object sender, EventArgs e)
{
pictureBox1.Image = Image.FromFile("D:/色々/中高生向け戦争小説 ギガンダム討伐/so_036.jpg");
}
}
class PictToCircle
{
Random rnd = new Random();
Bitmap b1 = null;
Bitmap b2 = null;
int h;//高さ
int w;//横幅
int max;//横と高さのうちで大きいほう
public Bitmap changePictToLine(Bitmap inBit)
{
Color C;
//アルゴリズムを分かりやすくするために （行、列に直す）
byte[,] bmpData = new byte[inBit.Height, (inBit.Width) * 3 ];
// bitmapクラスの画像ピクセル値を配列に挿入
for (int i = 0; i < inBit.Height; i++)
{
for (int j = 0; j < inBit.Width; j++)
{
C=inBit.GetPixel(j,i );
bmpData[i,j*3+0] = C.R;
bmpData[i,j*3+1] = C.G;
bmpData[i,j*3+2] = C.B;
}
}
int w=inBit.Width;
double[] a=new double [3];
double[] b=new double [3];
int lenMax = 12;
double[] bBunbos=new double[lenMax];
double[] xAves=new double[lenMax];
double[] yVers=new double[lenMax];
for (int i = 4; i < lenMax;i++ )
{
xAves[i] =(i + 1.0) / 2.0;
for (double k = 0; k < i; k++)
{
bBunbos[i] +=(k - xAves[i] )*(k-xAves[i] );
}
}
int colPoint;
int loopUp;
double r2,g2,b2;
int []minRGB = new int[lenMax];
int selectRGB = 0;
for (int i = 0; i < inBit.Height; i++)
{
colPoint = 0;
do
{
if (w - colPoint < 4)
{
//とりあえずの数式
colPoint = w;
}
else
{
if (w - colPoint < lenMax)
{
loopUp = w - colPoint;
}
else
{
loopUp = lenMax;
}
for (int k = 4; k < loopUp; k++)
{
a[0]=a[1]=a[2]=0;
b[0]=b[1]=b[2]=0;
for (int u = 0; u < k; u++)
{
a[0]+=bmpData[i,colPoint*3+u*3+0];
a[1]+=bmpData[i,colPoint*3+u*3+1];
a[2]+=bmpData[i,colPoint*3+u*3+2];
b[0] += bmpData[i, colPoint * 3 + u * 3 + 0] *1.0*(xAves[k]-u);
b[1] += bmpData[i, colPoint * 3 + u * 3 + 1] *1.0*(xAves[k]-u);
b[2] += bmpData[i, colPoint * 3 + u * 3 + 2] *1.0*(xAves[k]-u);
}
a[0] /= k;
a[1] /= k;
a[2] /= k;
b[0] /= bBunbos[k] ;
b[1] /= bBunbos[k] ;
b[2] /= bBunbos[k] ;
double [] verTemps=new double[3];
double[] verSum = new double[3];
for (int u = 0; u < k; u++)
{
r2=bmpData[i, colPoint * 3 + u * 3 + 0];
g2 = bmpData[i, colPoint * 3 + u * 3 + 1];
b2 = bmpData[i, colPoint * 3 + u * 3 + 2];
verTemps[0] = (r2 - b[0] * (xAves[k] - u) + a[0]);
verTemps[0] *= verTemps[0];
verTemps[1] = (g2 - b[1] * (xAves[k] - u) + a[1]);
verTemps[1] *= verTemps[1];
verTemps[2] = (b2 - b[2] * (xAves[k] - u) + a[2]);
verTemps[2] *= verTemps[2];
verSum[0] += verTemps[0];
verSum[1] += verTemps[1];
verSum[2] += verTemps[2];
}
yVers[k] = 0;
for (int s = 0; s < 3; s++)
{
verTemps[s] = Math.Sqrt(1.0 / (k - 1.0) * verSum[s] *1.0 );
}
yVers[k] = verTemps[0] * verTemps[1] * verTemps[2];
if (verTemps[0] > verTemps[1] && verTemps[0] > verTemps[2])
{
minRGB[k] = 0;
}
else if (verTemps[1] > verTemps[2] && verTemps[1] > verTemps[0])
{
minRGB[k] = 1;
}
else
{
minRGB[k] = 2;
}
}
double minVer=yVers[4] ;
int minLen=4;
for (int k = 4; k < loopUp; k++)
{
if (rnd.Next(1000) < 20)
{
if (minVer < yVers[k])
{
minVer = yVers[k];
minLen = k;
selectRGB = minRGB[k];
}
}
else
{
if (minVer < yVers[k])
{
minVer = yVers[k];
minLen = k;
selectRGB=minRGB[k];
}
}
}
double t1, t2, t3;
if (selectRGB == 0)
{
t1 = 0.8;
t2 = 0.5;
t3 = 0.5;
}
else if (selectRGB == 1)
{
t1 = 0.8;
t2 = 0.5;
t3 = 0.5;
}
else
{
t1 = 0.8;
t2 = 0.8;
t3 = 0.5;
}
for (int k = 0; k < minLen; k++)
{
bmpData[i, k * 3 + colPoint * 3 + 0] = (byte)cutNum(0,255, (int)((b[0]*t1) * (k - xAves[minLen]) + (t1+1)*a[0]));
bmpData[i, k * 3 + colPoint * 3 + 1] = (byte)cutNum(0, 255, (int)((b[1]*t2) * (k - xAves[minLen]) + (t2+1)*a[1]));
bmpData[i, k * 3 + colPoint * 3 + 2] = (byte)cutNum(0, 255, (int)((b[2]*t3) * (k - xAves[minLen]) + (t3+1)*a[2]));
}
colPoint+=minLen;
}
} while (colPoint < w );
}
Color c;
for (int i = 0; i < inBit.Height; i++)
{
for (int j = 0; j < inBit.Width; j++)
{
c = Color.FromArgb(bmpData[i, j * 3 + 0],
bmpData[i, j * 3 + 1],
bmpData[i, j * 3 + 2]);
inBit.SetPixel(j, i, c);
}
}
return inBit;
}
public PictToCircle()
{
}
public void changeCircle(Bitmap bmp1)
{
this.b1 = bmp1;
this.b2 = null;
this.b1 = bmp1;
this.h = bmp1.Height;
this.w = bmp1.Width;
this.max = Math.Max(this.h, this.w);
this.b2 = new Bitmap(b1.Width, b1.Height);
for (int i = 0; i < w; i++)
{
for (int j = 0; j < h; j++)
{
b2.SetPixel(i, j, Color.White);
}
}
int nowSize = (int)Math.Floor(max / 3.0);
int tUp = 0;
int incK = 1;
while (nowSize > 1)
{
nowSize = (int)(nowSize / 1.717);
for (int i = 0; i < b1.Width / nowSize; i++)
{
for (int j = 0; j < b1.Height / nowSize; j++)
{
if (nowSize > 5)
{
tUp = 8;
}
else
{
tUp = 3;
incK = 2;
}
for (int k = 0; k < tUp; k+=incK)
{
CellToCircle(rnd.Next(4 * nowSize) - 2 * nowSize + i * nowSize, rnd.Next(4 * nowSize) - 2 * nowSize + j * nowSize, nowSize);
}
}
}
}
}
public void CellToCircle(int x, int y, int size)
{
if (rnd.Next(100) > 95)
{
size += rnd.Next(2);
}
int sx = cutNum(0, this.b1.Width - 1, x - size);
int sy = cutNum(0, this.b1.Height - 1, y - size);
int ex = cutNum(1, this.b1.Width, x + size);
int ey = cutNum(1, this.b1.Height, y + size);
int checkR = 1600;
if (size > 4)
{
checkR = 2500;
}
else
{
checkR = 4900;
}
float aveR = 0;
float aveG = 0;
float aveB = 0;
Color c1;
int th = (int)Math.Floor((Math.Sqrt(size * 3)));
int tw = th;
int t1 = ((ex - sx) / tw + 1) * ((ey - sy) / tw + 1);
for (int i = sx; i < ex; i += tw)
{
for (int j = sy; j < ey; j += th)
{
//各色の平均をとる
c1 = b1.GetPixel(i, j);
aveR += c1.R;
aveG += c1.G;
aveB += c1.B;
}
}
aveR /= t1;
aveG /= t1;
aveB /= t1;
float ave = 0;
float count = 0;
for (int i = sx; i < ex; i += tw)
{
for (int j = sy; j < ey; j += th)
{
//平均からの距離を図る
c1 = b1.GetPixel(i, j);
ave = (aveR - c1.R) * (aveR - c1.R);
ave += (aveG - c1.G) * (aveG - c1.G);
ave += (aveB - c1.B) * (aveB - c1.B);
if (ave < checkR)
{
count++;
}
}
}
if (rnd.Next(10) > 3)
{
c1 = b1.GetPixel(rnd.Next(ex - sx) + sx, rnd.Next(ey - sy) + sy);
}
else
{
c1 = Color.FromArgb((int)(aveR), (int)(aveG), (int)(aveB));
}
float tUp2 = 0;
if (size > 12)
{
tUp2 = 0.5F;
}
else if (size > 7)
{
tUp2 = 0.4F;
}
else
{
tUp2 = 0.3F;
}
if (count / t1 > tUp2)
{
cellToCircle2(sx, sy, ex, ey, x, y, size, c1);
}
}
void cellToCircle2(int sx, int sy, int ex, int ey, int x, int y, int size, Color c)
{
Color c2;
int tHeight, sy2, ey2;
int size2 = size * size;
byte r1, g1, b1;
for (int i = sx; i < ex; i++)
{
if (size > 2)
{
tHeight = (int)Math.Floor(Math.Sqrt(size2 - (double)((x - i) * (x - i))));
sy2 = cutNum(sy, ey, y - tHeight);
ey2 = cutNum(sy, ey, y + tHeight);
}
else
{
sy2 = sy;
ey2 = ey;
}
for (int j = sy; j < ey; j++)
{
if (size >7)
{
c2 = this.b1.GetPixel(i, j);
r1 = (byte)cutNum(0, 255, (int)(c.R * 0.7 + c2.R * 0.3));
g1 = (byte)cutNum(0, 255, (int)(c.G * 0.7 + c2.G * 0.3));
b1 = (byte)cutNum(0, 255, (int)(c.B * 0.7 + c2.B * 0.3));
c2 = Color.FromArgb(r1, g1, b1);
this.b2.SetPixel(i, j, c2);
}
else
{
c2 = this.b1.GetPixel(i, j);
g1 = c2.G;
b1 = c2.B;
r1 = c2.R;
c2 = this.b2.GetPixel(i, j);
if (((int)(r1) - g1) - b1 > 100)
{
r1 = (byte)(r1 * 0.3 + 255 * 0.7);
g1 =(byte)((g1 * 0.5) + rnd.Next(10));
b1 = (byte)((g1 * 0.5)+ rnd.Next(10));
}
if (((int)(g1) - r1) - b1 > 100)
{
g1 = (byte)(g1 * 0.3 + 255 * 0.7);
r1 = (byte)((g1 * 0.4)+rnd.Next(10));
b1 = (byte)((b1 * 0.4)+rnd.Next(10));
}
if (((int)(b1) - r1) - g1 > 100)
{
b1 = (byte)(b1 * 0.3 + 255 * 0.7);
r1 = (byte)((r1 * 0.4)+rnd.Next(10));
g1 = (byte)((g1 * 0.4)+rnd.Next(10));
}
if (((int)(b1) + r1) + g1 <400)
{
b1 = (byte)(b1 * 0.6);
r1 = (byte)(r1 * 0.6);
g1 = (byte)(g1 * 0.6);
}
r1 = (byte)cutNum(0, 255, (int)(c.R * 0.4 + r1 * 0.3+c2.R*0.4));
g1 = (byte)cutNum(0, 255, (int)(c.G * 0.4+ g1 * 0.3+c2.G*0.4 ));
b1 = (byte)cutNum(0, 255, (int)(c.B * 0.4 + b1 * 0.3+c2.B*0.4 ));
c2 = Color.FromArgb(r1, g1, b1);
this.b2.SetPixel(i, j, c2);
}
}
}
}
public Bitmap getPict()
{
return this.b2;
}
private int cutNum(int min, int max, int t)
{
if (t < min)
{
t = min;
}
if (t > max)
{
t = max;
}
return t;
}
}
}
