Apéndice C. Clases del sistema.

Transcripción

1 Apéndice C. Clases del sistema. /*Clase ImageCoder Se encarga de recibir el vector generado en ScannerColorPixel y resumir determinado número de pixeles a uno representativo por medio del color que más abunda en los pixeles*/ import java.awt.*; import java.util.*; public class ImageCoder /*Variables*/ private Image imagen = null; private Vector vecolors = new Vector(); private int width, height; private int inred = 0, ingreen = 0, inblue = 0, inyellow = 0, inviolet = 0, inskyblue = 0, inwhite = 0, inblack = 0; /*Constructor*/ public ImageCoder(Image imagen, int width, int height) this.imagen = imagen; this.width = width / 8; this.height = height / 8; /*Métodos*/ /*Recibe como parámetros dos enteros, es decir, las coordenadas X y Y, y regresa un entero*/ public int getatributo(int inx, int iny) vecolors = ScannerColorPixelImage.handlepixels(imagen, inx, iny, width, height); updateatributos(); return getresult(); /*Recibe un punto y regresa un entero*/ public int getatributo(point point) vecolors = ScannerColorPixelImage.handlepixels(imagen, point.x, point.y, width, height); updateatributos(); return getresult(); /*Este método define los colores que abundan más*/ private void updateatributos() Color color = null; clearresults(); for(int i=0;i<vecolors.size();i++) if(vecolors.elementat(i) == null) continue; color = (Color)veColors.elementAt(i); if(color.getred() < 55 && color.getgreen() < 55 && color.getblue() < 55)

2 inblack++; else if(color.getred() > 200 && color.getgreen() > 200 && color.getblue() > 200) inwhite++; else if(color.getred() > color.getgreen() && color.getred() > color.getblue()) inred++; else if(color.getred() == color.getgreen() && color.getred() > color.getblue()) inyellow++; else if(color.getred() == color.getblue() && color.getred() > color.getgreen()) inviolet++; else if(color.getgreen() > color.getred() && color.getgreen() > color.getblue()) ingreen++; else if(color.getblue() > color.getred() && color.getblue() > color.getgreen()) inblue++; else if(color.getgreen() == color.getblue() && color.getgreen() > color.getred()) inskyblue++; /*Asigna los números a cada color y regresa un entero*/ private int getresult() int results[] = new int[8]; results[0] = inred; results[1] = ingreen; results[2] = inblue; results[3] = inyellow; results[4] = inviolet; results[5] = inskyblue; results[6] = inwhite; results[7] = inblack; return getolderindex(results); /*Limpia los resultados*/ private void clearresults() inred = 0; ingreen = 0; inblue = 0; inyellow = 0; inviolet = 0; inskyblue = 0; inwhite = 0; inblack = 0; /*Recibe un entero, se encarga de checar en caso de que haya la misma cantidad de dos colores al mismo tiempo de ver cual tiene prioridad, en este caso, en el orden en el que están en el método getresult y regresa un entero*/ private int getolderindex(int results[]) int mayorindex = 0;

3 for(int i=0;i<results.length-1;i++) if(results[mayorindex] < results[i+1]) mayorindex = i + 1; return mayorindex; /*Clase Quadtree Se encarga de segmentar la imagen en cuadrantes*/ import java.awt.*; public class Quadtree /*Variables*/ private Image image = null; private int width, height; public String stcoder = ""; private Point pocuadrantes[] = new Point[64]; private ImageCoder imagecoder; /*Métodos*/ /*Recibe una imagen, el ancho y el largo de la imagen, regresa un string, que es la cadena generada* / public String getcoder(image image, int width, int height) this.image = image; this.width = width; this.height = height; setcuadrantes(); imagecoder = new ImageCoder(image, width, height); executecoder(); return stcoder; private void executecoder() for(int i=0;i<64;i++) stcoder += imagecoder.getatributo(pocuadrantes[i]); /*Se encarga de ir segmentado la imagen en cuadrantes, dando el ancho y el largo de la imagen*/ private void setcuadrantes() int insubwidth = width / 8; int insubheight = height / 8; pocuadrantes[0] = new Point(0, height - insubheight); pocuadrantes[1] = new Point(0, height - (2 * insubheight)); pocuadrantes[4] = new Point(0, height - (3 * insubheight));

4 pocuadrantes[5] = new Point(0, height - (4 * insubheight)); pocuadrantes[16] = new Point(0, height - (5* insubheight)); pocuadrantes[17] = new Point(0, height - (6 * insubheight)); pocuadrantes[20] = new Point(0, height - (7 * insubheight)); pocuadrantes[21] = new Point(0, height - (8 * insubheight)); pocuadrantes[2] = new Point(inSubWidth, height - insubheight); pocuadrantes[3] = new Point(inSubWidth, height - (2 * insubheight)); pocuadrantes[6] = new Point(inSubWidth, height - (3 * insubheight)); pocuadrantes[7] = new Point(inSubWidth, height - (4 * insubheight)); pocuadrantes[18] = new Point(inSubWidth, height - (5* insubheight)); pocuadrantes[19] = new Point(inSubWidth, height - (6 * insubheight)); pocuadrantes[22] = new Point(inSubWidth, height - (7 * insubheight)); pocuadrantes[23] = new Point(inSubWidth, height - (8 * insubheight)); pocuadrantes[8] = new Point(inSubWidth*2, height - insubheight); pocuadrantes[9] = new Point(inSubWidth*2, height - (2 * insubheight)); pocuadrantes[12] = new Point(inSubWidth*2, height - (3 * insubheight)); pocuadrantes[13] = new Point(inSubWidth*2, height - (4 * insubheight)); pocuadrantes[24] = new Point(inSubWidth*2, height - (5* insubheight)); pocuadrantes[25] = new Point(inSubWidth*2, height - (6 * insubheight)); pocuadrantes[28] = new Point(inSubWidth*2, height - (7 * insubheight)); pocuadrantes[29] = new Point(inSubWidth*2, height - (8 * insubheight)); pocuadrantes[10] = new Point(inSubWidth*3, height - insubheight); pocuadrantes[11] = new Point(inSubWidth*3, height - (2 * insubheight)); pocuadrantes[14] = new Point(inSubWidth*3, height - (3 * insubheight)); pocuadrantes[15] = new Point(inSubWidth*3, height - (4 * insubheight)); pocuadrantes[26] = new Point(inSubWidth*3, height - (5* insubheight)); pocuadrantes[27] = new Point(inSubWidth*3, height - (6 * insubheight)); pocuadrantes[30] = new Point(inSubWidth*3, height - (7 * insubheight)); pocuadrantes[31] = new Point(inSubWidth*3, height - (8 * insubheight)); pocuadrantes[32] = new Point(inSubWidth*4, height - insubheight); pocuadrantes[33] = new Point(inSubWidth*4, height - (2 * insubheight)); pocuadrantes[36] = new Point(inSubWidth*4, height - (3 * insubheight)); pocuadrantes[37] = new Point(inSubWidth*4, height - (4 * insubheight)); pocuadrantes[48] = new Point(inSubWidth*4, height - (5* insubheight)); pocuadrantes[49] = new Point(inSubWidth*4, height - (6 * insubheight)); pocuadrantes[52] = new Point(inSubWidth*4, height - (7 * insubheight)); pocuadrantes[53] = new Point(inSubWidth*4, height - (8 * insubheight)); pocuadrantes[34] = new Point(inSubWidth*5, height - insubheight); pocuadrantes[35] = new Point(inSubWidth*5, height - (2 * insubheight)); pocuadrantes[38] = new Point(inSubWidth*5, height - (3 * insubheight)); pocuadrantes[39] = new Point(inSubWidth*5, height - (4 * insubheight)); pocuadrantes[50] = new Point(inSubWidth*5, height - (5* insubheight)); pocuadrantes[51] = new Point(inSubWidth*5, height - (6 * insubheight)); pocuadrantes[54] = new Point(inSubWidth*5, height - (7 * insubheight)); pocuadrantes[55] = new Point(inSubWidth*5, height - (8 * insubheight)); pocuadrantes[40] = new Point(inSubWidth*6, height - insubheight); pocuadrantes[41] = new Point(inSubWidth*6, height - (2 * insubheight)); pocuadrantes[44] = new Point(inSubWidth*6, height - (3 * insubheight));

5 pocuadrantes[45] = new Point(inSubWidth*6, height - (4 * insubheight)); pocuadrantes[56] = new Point(inSubWidth*6, height - (5* insubheight)); pocuadrantes[57] = new Point(inSubWidth*6, height - (6 * insubheight)); pocuadrantes[60] = new Point(inSubWidth*6, height - (7 * insubheight)); pocuadrantes[61] = new Point(inSubWidth*6, height - (8 * insubheight)); pocuadrantes[42] = new Point(inSubWidth*7, height - insubheight); pocuadrantes[43] = new Point(inSubWidth*7, height - (2 * insubheight)); pocuadrantes[46] = new Point(inSubWidth*7, height - (3 * insubheight)); pocuadrantes[47] = new Point(inSubWidth*7, height - (4 * insubheight)); pocuadrantes[58] = new Point(inSubWidth*7, height - (5* insubheight)); pocuadrantes[59] = new Point(inSubWidth*7, height - (6 * insubheight)); pocuadrantes[62] = new Point(inSubWidth*7, height - (7 * insubheight)); pocuadrantes[63] = new Point(inSubWidth*7, height - (8 * insubheight)); /*Clase ScannerColorPixelImage Se encarga de guardar en un vector todos los pixeles de la imagen con su respective color*/ import java.awt.*; import java.awt.geom.*; import java.awt.image.*; import java.util.*; public class ScannerColorPixelImage /*Métodos*/ /*Recibe un pixel, coordenada x y coordenada y regresa un nuevo color(r,g,b)*/ public static Color handlesinglepixel(int x, int y, int pixel) int alpha = (pixel >> 24) & 0xff; int red = (pixel >> 16) & 0xff; int green = (pixel >> 8) & 0xff; int blue = (pixel ) & 0xff; return new Color(red, green, blue); /*Recibe una imagen, la coordenada x, la coordenada y, y el largo y el ancho de la imagen y regresa un vector*/ public static Vector handlepixels(image img, int x, int y, int w, int h) Vector vecolors = new Vector( ); int[ ] pixels = new int[w * h]; PixelGrabber pg = new PixelGrabber(img, x, y, w, h, pixels, 0, w); try pg.grabpixels(); catch(exception e) for(int j=0;j<h;j++)

6 for (int i=0;i<w;i++) vecolors.addelement(handlesinglepixel(x+i, y+j, pixels[j * w + i])); vecolors.addelement(null); return vecolors; /*Clase ConnectionPool Unicamente regresa un objeto de tipo conexión que le va a servir al servlet*/ import java.io.*; import java.sql.*; import java.util.*; public class ConnectionPool /*Variables*/ private Connection conn = null; public ConnectionPool() instanceconnection(); /*Métodos*/ /*Regresa una conexión*/ public Connection getconnection() return conn; /*Cierra la conexión*/ public void closeconnections() try conn.close(); catch(sqlexception sqlexc) System.err.println("SQLException: " + sqlexc); private String getlineconfig(string stdata) Vector vedata = new Vector(); String stline = null; try BufferedReader buffreader = new BufferedReader(new FileReader("C:\\Inetpub\\ServletExec ISAPI\\Servlets\\Config\\ConnConfig.cfg")); while((stline = buffreader.readline())!= null) vedata.addelement(stline); buffreader.close(); if(stdata.equals("driver")) stline = (String)veData.elementAt(1);

7 else if(stdata.equals("url")) stline = (String)veData.elementAt(2); else stline = null; catch(ioexception ioexc) System.err.println("IOException: " + ioexc); int indexigual = stline.indexof("="); return stline.substring(indexigual + 1, stline.length()); private void instanceconnection() String url = getlineconfig("url"); exc); try Class.forName(getLineConfig("Driver")).newInstance(); catch(java.lang.classnotfoundexception exc) System.err.print("ClassNotFoundException: " + catch(java.lang.instantiationexception exc) System.err.print("InstantiationException: " + exc); catch(java.lang.illegalaccessexception exc) System.err.print("IllegalAccessException: " + exc); try conn = DriverManager.getConnection(url); catch(sqlexception e) System.err.println("SQLException: " + e); public String getdriver() return getlineconfig("driver"); public String geturl() return getlineconfig("url"); public static void main(string arg[]) System.out.println(new ConnectionPool().getConnection()); /*Clase principal SvtUploadFile Se encarga de hacer la conexión a la BD, de agregar imágenes a la BD, se buscar imágenes que sean parecidas a la que se está solicitando*/ import java.awt.*; import java.sql.*; import java.io.*; import java.util.*; import javax.servlet.*;

8 import javax.servlet.http.*; public class SvtUploadFile extends HttpServlet /*Variables*/ private final String stpathimgs = "C:\\Inetpub\\wwwroot\\Tesis\\Img\\"; private ConnectionPool connpool = null; /*Métodos*/ public void init(servletconfig servletconfig) try super.init(servletconfig); trace("initializing connection..."); connpool = new ConnectionPool(); trace("initialized connection..."); catch(servletexception svtexception) trace("servletexception: (init) " + svtexception); /*Destruye la conexión al servlet.*/ public void destroy() trace("destroying servlet..."); connpool.closeconnections(); trace("servlet destroyed."); private String getcoderimg(string pathimg, int width, int height) Image img = new Canvas().getToolkit().getImage(pathImg); return new Quadtree().getCoder(img, width, height); /*Obtenga el id máximo de la BD, recibe una conexión y regresa un entero*/ private int getidmax(connection conn) int id = 1; try /*Hace un query en la BD para buscar el id máximo*/ String stquery = "select max(id) from imagenes"; Statement staquadtree = conn.createstatement(); trace("statement: (getidmax) " + staquadtree); ResultSet rsquadtree = staquadtree.executequery(stquery); trace("resultset: (getidmax) " + rsquadtree); rsquadtree.next(); id = rsquadtree.getint(1); catch(sqlexception sqlexc) trace("sqlexception: (getidmax) " + sqlexc); return id; /*Obtener el nombre del path de la imagen. Recibe una conexión y regresa un archivo*/ private File getfilename(connection conn)

9 File file = null; try int maxid = getidmax(conn); String stquery = "select path from imagenes where id=" + maxid; Statement staquadtree = conn.createstatement(); ResultSet rsquadtree = staquadtree.executequery(stquery); rsquadtree.next(); file = new File(rsQuadtree.getString("path")); catch(sqlexception sqlexc) trace("sqlexception: (getfilename) " + sqlexc); return file; /*Recibe una petición al servlet y una conexión. Permite crear imágenes que tengan la extensión.jpeg y.gif*/ private void createimg(httpservletrequest req, Connection conn) try File file = getfilename(conn); trace("file: " + file.tostring()); InputStream input = (InputStream)req.getInputStream(); int numbytes = input.available(); byte byimg[] = new byte[numbytes]; input.read(byimg); input.close(); String stbytes = new String(byImg); int inoffset = -1; int incount = -1; if(stbytes.indexof("image/gif")!= -1) inoffset = stbytes.indexof("image/gif") + 13; stbytes = stbytes.substring(inoffset, stbytes.length()); incount = stbytes.indexof(" ") - 2; stbytes = stbytes.substring(inoffset, incount); else if(stbytes.indexof("image/pjpeg")!= -1) inoffset = stbytes.indexof("image/pjpeg") + 15; stbytes = stbytes.substring(inoffset, stbytes.length()); incount = stbytes.indexof(" ") - 2; stbytes = stbytes.substring(inoffset, incount); FileOutputStream fileout = new FileOutputStream(stPathImgs + file.getname()); fileout.write(byimg, inoffset, incount); fileout.flush(); fileout.close();

10 catch(ioexception ioexc) trace("ioexception: (createimg) " + ioexc); /*Agrega una imagen con su path, a la BD. Recibe una petición y una conexión*/ private void addtodb(httpservletrequest req, Connection conn) String pathname = req.getparameter("imagen_material"); trace(" PathName: " + pathname); int width = Integer.parseInt(req.getParameter("widthImg")); trace("width: " + width); int height = Integer.parseInt(req.getParameter("heightImg")); trace("height: " + height); String imgcoder = getcoderimg(pathname, width, height); trace("imgcoder: " + imgcoder); try /*Agrega imágenes a la BD con su path y su cadena generada*/ String stquery = "insert into imagenes(path, img_reducida) values('" + pathname + "', '" + imgcoder + "')"; Statement staquadtree = conn.createstatement(); staquadtree.executeupdate(stquery); catch(sqlexception sqlexc) trace("sqlexception: (addtodb) " + sqlexc); /*Obtiene imagenes con su path y las guarda en un vector. Recibe un string y una conexión, regresa un vector de imágenes */ private Vector getpathimgs(string stcodeimg, Connection conn) Vector vepath = new Vector(); try String stquery = "select * from imagenes"; Statement staquadtree = conn.createstatement(); ResultSet rsquadtree = staquadtree.executequery(stquery); while(rsquadtree.next()) if(isimgsimilate(stcodeimg, rsquadtree.getstring("img_reducida"))) vepath.addelement(rsquadtree.getstring("path")); catch(sqlexception sqlexc) trace("sqlexception: (getfilename)" + sqlexc); return vepath; /*Compara las cadenas y me regresa las similares. Recibe la cadena de dos imágenes.*/ private boolean isimgsimilate(string stcodeimg1, String stcodeimg2) return true; /*Regresa los resultados de la búsqueda en una página html*/ private void showresults(httpservletrequest req, HttpServletResponse res, Connection conn)

11 try PrintWriter printwriter = res.getwriter(); String pathimg = req.getparameter("imagen_material"); String stcodeimg = getcoderimg(pathimg, Integer.parseInt(req.getParameter("widthImg")), Integer.parseInt(req.getParameter("heightImg"))); Vector vepathimgs = getpathimgs(stcodeimg, conn); File file; printwriter.println("<html>"); printwriter.println("<body>"); printwriter.println("images result for: "); printwriter.println("<img src='" + pathimg + "'>"); printwriter.println("<br><br>"); printwriter.println("<center>"); for(int i=0;i<vepathimgs.size();i++) file = new File((String)vePathImgs.elementAt(i)); printwriter.println("<img src='" + stpathimgs + file.getname() + "'>"); printwriter.println("<br>"); printwriter.println(stpathimgs + file.getname()); printwriter.println("<br><br><br><br>"); printwriter.println("</center>"); printwriter.println("</body>"); printwriter.println("</html>"); printwriter.close(); catch(exception exc) trace("exception: (showresults) " + exc); /*Se indica si la imagen ha sido subida*/ public void service(httpservletrequest req, HttpServletResponse res) throws ServletException, IOException PrintWriter printwriter = res.getwriter(); Connection conn = connpool.getconnection(); trace("connection: " + conn.tostring()); int id = 0; try id = Integer.parseInt(req.getParameter("id")); catch(exception exc) id = 1; trace("service id = " + id); switch (id) case 0: addtodb(req, conn); printwriter.println("<html><head><script>"); printwriter.println("parent.fwork.submitimageform();");

12 case 1: case 2: printwriter.println("</script></head></html>"); break; createimg(req, conn); printwriter.println("image uploaded.<br>"); break; showresults(req, res, conn); break; default: break; /*Recibe una cadena*/ public void trace(string cad) System.out.println(cad);