How to get the RGB value of each pixel of a hole image?

Hi,
I'm trying the get the RGB(between 0 and 255) value of each pixel of a hole image. I writte this code:
public void convertImage()
 int w = bufferedImage.getWidth();
 int h = bufferedImage.getHeight();
 int[] rgbs = new int[w*h];/* create a new array */
 bufferedImage.getRGB(0,0,w,h,rgbs,0,w);
 for(int i=0; i<10; i++)
 System.out.println(rgbs);
But the value rgbs[] contain an 8 bits integer, it's possible to have the RGB of this.
In other case, do you have another sample of code to help me to get the RGB value of each pixel of a hole image?
thanks.

Hi, I am currently working on an application which requires the generation of color histograms that are a representation of a given image ie; myImage.jpg. I have made use of the JAI API and used it's Histogram class to generate a histogram vector for the image that I provide.
However, upon closer inpsection, I have realised the following:-
(1) The image, as it contains multiple colours is a multi-banded image ie; this means that each individual pixel in the image contains multiple colour samples (I assume) ie; Red, Blue Green. Due to this, a "separate list of bins represents each individual band". This means that for myImage.jpg, there is not ONE individual vector that contains data such as "400 pixels purple" "5000 pixels yellow" etc but there are indeed 3 vectors that represent the image.
I have found this to be true using the getBinSize(int band, int bin) method call - the first parameter being 0,1,2 for Red Blue or Green.
My basic (or complex) problem is that I basically want to generate 2 color histogram vectors that represent 2 separate images and then compare these vectors "side-by-side" using the vector comparison algorithms that I have already developed.
Is there a way of using Java's Histogram class and it's associated methods to be able to store all colour information for an image in only ONE vector?? I am pretty certain that this is not possible, so my dilemma is now: - If I have an image and it is represented by three separate vectors/histograms, then how can I possibly compare these to say whether an image matches or not.
When a pixel is analysed by a program, what seems to be the result returned is how that pixel is made up in terms of Red, Green or blue ie; a purple pixel is X blue, X red and X green and hence 3 vectos existing.
Can anybody offer advice on how to achieve this task of looking at a pixel and simply determining it's actual color. I would preferably like to keep my code that I have already developed ie; the use of the Java Histoogram class but any other offerings are appreciated.

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<af:selectManyListbox label="Label 1" id="sml1" partialTriggers="cb2"
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Hi Timo,
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jsff page fragment
<?xml version='1.0' encoding='UTF-8'?>
<jsp:root xmlns:jsp="http://java.sun.com/JSP/Page" version="2.1"
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TestBean.java
package com.demo.view;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import javax.faces.component.UISelectItems;
import javax.faces.event.ActionEvent;
import javax.faces.model.SelectItem;
import oracle.adf.model.BindingContext;
import oracle.adf.model.binding.DCBindingContainer;
import oracle.adf.model.binding.DCIteratorBinding;
import oracle.adf.view.rich.component.rich.RichPopup;
import oracle.adf.view.rich.component.rich.data.RichTable;
import oracle.adf.view.rich.component.rich.input.RichSelectManyListbox;
import oracle.adf.view.rich.context.AdfFacesContext;
import oracle.adf.view.rich.event.DialogEvent;
import oracle.jbo.Key;
import oracle.jbo.Row;
import oracle.jbo.RowSetIterator;
import org.apache.myfaces.trinidad.model.RowKeySet;
public class TestBean {
private RichTable tsupportIssues;
private List<SelectItem> lovValue;
private List<SelectItem> actualList;
private RichSelectManyListbox prp1;
private List valuesChoosed = new ArrayList();
private UISelectItems selectedItems;
private RichPopup searchSupplierPopup;
 public TestBean() {
 super();
public void setTsupportIssues(RichTable tsupportIssues) {
 this.tsupportIssues = tsupportIssues;
public RichTable getTsupportIssues() {
 return tsupportIssues;
public void testMethod(ActionEvent actionEvent) {
 // Add event code here...
 // For learning purposes - show Select Many Button clicked
 System.out.println("Select Many Button has been Clicked");
 // // RowKeySet Object can hold the selected rows from a user as follows
 RowKeySet rksSelectedRows = this.getTsupportIssues().getSelectedRowKeys();
 // Iterator object provides the ability to use hasNext(), next() and remove() against the selected rows
 Iterator itrSelectedRows = rksSelectedRows.iterator();
 // Get the data control that is bound to the table - e.g.
 // OpenSupportItemsIterator
 DCBindingContainer bindings = (DCBindingContainer)BindingContext.getCurrent().getCurrentBindingsEntry();
 DCIteratorBinding dcIteratorBindings = bindings.findIteratorBinding("findAllContactsIterator");
 // Information from binding that is specific to the rows
 RowSetIterator rsiSelectedRows = dcIteratorBindings.getRowSetIterator();
 // Loop through selected rows
 int i=1;
 while (itrSelectedRows.hasNext()) {
 // Get key for selected row
 Key key = (Key)((List)itrSelectedRows.next()).get(0);
 // Use the key to get the data from the above binding that is related to the row
 Row myRow = rsiSelectedRows.getRow(key);
 // Display attribute of row in console output - would generally be bound to a UI component like a Label and or used to call another proces
 System.out.println(myRow.getAttribute("name"));
 valuesChoosed.add(myRow.getAttribute("name"));
// actualList = new ArrayList<SelectItem>();
// String j = Integer.toString(i);
// actualList.add(new SelectItem(j, (String)myRow.getAttribute("name")));
// i++;
 searchSupplierPopup.hide();
 AdfFacesContext.getCurrentInstance().addPartialTarget(prp1);
public void setLovValue(List<SelectItem> lovValue) {
 this.lovValue = lovValue;
public List<SelectItem> getLovValue() {
 return lovValue;
public void setActualList(List<SelectItem> actualList) {
 this.actualList = actualList;
public List<SelectItem> getActualList() {
 actualList = new ArrayList<SelectItem>();
 if(valuesChoosed.size()!=0){
 for(int i=0;i<valuesChoosed.size();i++){
 actualList.add(new SelectItem(valuesChoosed.get(i), (String)valuesChoosed.get(i)));
 else{
 actualList.add(new SelectItem("1","Select One"));
 return actualList;
public void setPrp1(RichSelectManyListbox prp1) {
 this.prp1 = prp1;
public RichSelectManyListbox getPrp1() {
 return prp1;
public void setValuesChoosed(List valuesChoosed) {
 this.valuesChoosed = valuesChoosed;
public List getValuesChoosed() {
 return valuesChoosed;
public void getValues(ActionEvent actionEvent) {
 // Add event code here...
 for(int i=0;i<valuesChoosed.size();i++){
 System.out.println(valuesChoosed.get(i));
public void getSelectedValues(ActionEvent actionEvent) {
 // Add event code here...
 for(int i=0;i<this.getLovValue().size();i++){
 System.out.println("Selected Value:"+this.getLovValue().get(i));
public void removeSelectedValues(ActionEvent actionEvent) {
 // Add event code here...
public void setSelectedItems(UISelectItems selectedItems) {
 this.selectedItems = selectedItems;
public UISelectItems getSelectedItems() {
 return selectedItems;
 public void setSearchSupplierPopup(RichPopup searchSupplierPopup) {
 this.searchSupplierPopup = searchSupplierPopup;
 public RichPopup getSearchSupplierPopup() {
 return searchSupplierPopup;
 public void cancelPopupSearch(ActionEvent actionEvent) {
 // Add event code here...
 searchSupplierPopup.hide();
 public void searchSupplier(ActionEvent actionEvent) {
 // Add event code here...
 RichPopup.PopupHints hints = new RichPopup.PopupHints();
 searchSupplierPopup.show(hints);
package com.demo.view;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import javax.faces.component.UISelectItems;
import javax.faces.event.ActionEvent;
import javax.faces.model.SelectItem;
import oracle.adf.model.BindingContext;
import oracle.adf.model.binding.DCBindingContainer;
import oracle.adf.model.binding.DCIteratorBinding;
import oracle.adf.view.rich.component.rich.RichPopup;
import oracle.adf.view.rich.component.rich.data.RichTable;
import oracle.adf.view.rich.component.rich.input.RichSelectManyListbox;
import oracle.adf.view.rich.context.AdfFacesContext;
import oracle.adf.view.rich.event.DialogEvent;
import oracle.jbo.Key;
import oracle.jbo.Row;
import oracle.jbo.RowSetIterator;
import org.apache.myfaces.trinidad.model.RowKeySet;
public class TestBean {
private RichTable tsupportIssues;
private List<SelectItem> lovValue;
private List<SelectItem> actualList;
private RichSelectManyListbox prp1;
private List valuesChoosed = new ArrayList();
private UISelectItems selectedItems;
private RichPopup searchSupplierPopup;
 public TestBean() {
 super();
public void setTsupportIssues(RichTable tsupportIssues) {
 this.tsupportIssues = tsupportIssues;
public RichTable getTsupportIssues() {
 return tsupportIssues;
public void testMethod(ActionEvent actionEvent) {
 // Add event code here...
 // For learning purposes - show Select Many Button clicked
 System.out.println("Select Many Button has been Clicked");
 // // RowKeySet Object can hold the selected rows from a user as follows
 RowKeySet rksSelectedRows = this.getTsupportIssues().getSelectedRowKeys();
 // Iterator object provides the ability to use hasNext(), next() and remove() against the selected rows
 Iterator itrSelectedRows = rksSelectedRows.iterator();
 // Get the data control that is bound to the table - e.g.
 // OpenSupportItemsIterator
 DCBindingContainer bindings = (DCBindingContainer)BindingContext.getCurrent().getCurrentBindingsEntry();
 DCIteratorBinding dcIteratorBindings = bindings.findIteratorBinding("findAllContactsIterator");
 // Information from binding that is specific to the rows
 RowSetIterator rsiSelectedRows = dcIteratorBindings.getRowSetIterator();
 // Loop through selected rows
 int i=1;
 while (itrSelectedRows.hasNext()) {
 // Get key for selected row
 Key key = (Key)((List)itrSelectedRows.next()).get(0);
 // Use the key to get the data from the above binding that is related to the row
 Row myRow = rsiSelectedRows.getRow(key);
 // Display attribute of row in console output - would generally be bound to a UI component like a Label and or used to call another proces
 System.out.println(myRow.getAttribute("name"));
 valuesChoosed.add(myRow.getAttribute("name"));
// actualList = new ArrayList<SelectItem>();
// String j = Integer.toString(i);
// actualList.add(new SelectItem(j, (String)myRow.getAttribute("name")));
// i++;
 searchSupplierPopup.hide();
 AdfFacesContext.getCurrentInstance().addPartialTarget(prp1);
public void setLovValue(List<SelectItem> lovValue) {
 this.lovValue = lovValue;
public List<SelectItem> getLovValue() {
 return lovValue;
public void setActualList(List<SelectItem> actualList) {
 this.actualList = actualList;
public List<SelectItem> getActualList() {
 actualList = new ArrayList<SelectItem>();
 if(valuesChoosed.size()!=0){
 for(int i=0;i<valuesChoosed.size();i++){
 actualList.add(new SelectItem(valuesChoosed.get(i), (String)valuesChoosed.get(i)));
 else{
 actualList.add(new SelectItem("1","Select One"));
 return actualList;
public void setPrp1(RichSelectManyListbox prp1) {
 this.prp1 = prp1;
public RichSelectManyListbox getPrp1() {
 return prp1;
public void setValuesChoosed(List valuesChoosed) {
 this.valuesChoosed = valuesChoosed;
public List getValuesChoosed() {
 return valuesChoosed;
public void getValues(ActionEvent actionEvent) {
 // Add event code here...
 for(int i=0;i<valuesChoosed.size();i++){
 System.out.println(valuesChoosed.get(i));
public void getSelectedValues(ActionEvent actionEvent) {
 // Add event code here...
 for(int i=0;i<this.getLovValue().size();i++){
 System.out.println("Selected Value:"+this.getLovValue().get(i));
public void removeSelectedValues(ActionEvent actionEvent) {
 // Add event code here...
 for(int i=0;i<this.getLovValue().size();i++){
 System.out.println("Selected Value:"+this.getLovValue().get(i));
 System.out.println(this.getLovValue().remove(i));
 AdfFacesContext.getCurrentInstance().addPartialTarget(prp1);
public void setSelectedItems(UISelectItems selectedItems) {
 this.selectedItems = selectedItems;
public UISelectItems getSelectedItems() {
 return selectedItems;
 public void setSearchSupplierPopup(RichPopup searchSupplierPopup) {
 this.searchSupplierPopup = searchSupplierPopup;
 public RichPopup getSearchSupplierPopup() {
 return searchSupplierPopup;
 public void cancelPopupSearch(ActionEvent actionEvent) {
 // Add event code here...
 searchSupplierPopup.hide();
 public void searchSupplier(ActionEvent actionEvent) {
 // Add event code here...
 RichPopup.PopupHints hints = new RichPopup.PopupHints();
 searchSupplierPopup.show(hints);
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A. Abhijit

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