/// <summary>
/// 画像内の文字を検索
/// </summary>
/// <param name="bmp">画像</param>
/// <param name="color">文字色</param>
/// <returns>結果</returns>
public static List<StringText> LetterSearch( Bitmap bmp, Color color ) {
var colordata = new bool[bmp.Width, bmp.Height];
var spacedata = "";
for( var y = 0; y < FONT_HEIGHT; y++ ) {
spacedata += "0";
}
//扱いやすいbool型に
for( var x = 0; x < bmp.Width; x++ ) {
for( var y = 0; y < bmp.Height; y++ ) {
if( bmp.GetPixel( x, y ) == color ) {
colordata[x, y] = true;
} else {
colordata[x, y] = false;
}
}
}
//各行の文字の一番上と一番下の行を求める
var stringLineList = new List<StringLine>();
{
var upperSide = -1;
for( var y = 0; y < bmp.Height; y++ ) {
var flag = false;
for( var x = 0; x < bmp.Width; x++ ) {
if( colordata[x, y] ) {
flag = true;
break;
}
}
if( upperSide == -1 && flag ) {
upperSide = y;
}
if( upperSide != -1 && !flag ) {
stringLineList.Add( new StringLine( upperSide, y-1 ) );
upperSide = -1;
}
if( upperSide != -1 && y == bmp.Height-1 ) {
stringLineList.Add(new StringLine(upperSide,y));
}
}
}
using( var font = new Font() ) {
var result = new List<StringText>();
foreach( var stringLine in stringLineList ) {
var stringText = new StringText( 0, 0, "" );
foreach( var padding in stringLine.padding ) {
//文字と文字の間の位置を求める
var spaceList = new List<int>();
spaceList.Add(-1);
for( var x = 0; x < bmp.Width; x++ ) {
var flag = false;
for( var y = stringLine.upperSide; y <= stringLine.lowerSide; y++ ) {
if( colordata[x, y] ) {
flag = true;
break;
}
}
if( !flag ) {
spaceList.Add( x );
}
}
//0と1で構成されたfontdataを生成する
var fontdataList = new List<string>();
for( var i = 0; i < spaceList.Count; i++ ) {
var nextCol = i + 1 == spaceList.Count ? bmp.Width : spaceList[i + 1];
fontdataList.Add( spacedata );
if( spaceList[i] + 1 < nextCol ) {
//次の行がスペースでない場合
if( stringText.x == 0 ) {
stringText.x = spaceList[i] + 1;
}
var fontdata = "";
for( var x = spaceList[i] + 1; x < nextCol; x++ ) {
for( var p = 0; p < padding.upper; p++ ) {
fontdata += "0";
}
for( var y = stringLine.upperSide; y <= stringLine.lowerSide; y++ ) {
fontdata += colordata[x, y] ? "1" : "0";
}
for( var p = 0; p < padding.lower; p++ ) {
fontdata += "0";
}
}
fontdataList.Add( fontdata );
}
}
var tempStr = "";
for( var i = 0; i < fontdataList.Count; i++ ) {
if( fontdataList.Count - 4 > i ) {
if( fontdataList[i] == spacedata &&
fontdataList[i + 1] == spacedata &&
fontdataList[i + 2] == spacedata &&
fontdataList[i + 3] == spacedata
) {
tempStr += " ";
i += 3;
continue;
}
}
var res = font.LikeSearch( fontdataList[i] );
switch( res.Length ) {
case 0:
//該当0
break;
case 1:
tempStr += res[0][0];
break;
default:
//複数結果があった場合の処理
tempStr += LongestMatch( res, fontdataList.ToArray(), ref i );
break;
}
}
tempStr = Regex.Replace( tempStr, "^ +| +$", "" );
if( stringText.text.Length < tempStr.Length ) {
stringText.text = tempStr;
stringText.y = stringLine.upperSide - padding.upper;
}
}
result.Add( stringText );
}
return result.ToList();
}
}
