java - Java 卷积(数组超出索引错误)
问题描述
我正在编写一个程序,它将读取卷积中的元素,然后程序将卷积中的每个元素与给定的内核相乘。我需要从其他类以及内核中获取卷积数组。
但我收到此错误消息:线程“main”中的异常 java.lang.ArrayIndexOutOfBoundsException: 6
错误将在注释部分用大写的句子指定,这是我的第二个 for 循环
类(内核和卷积)将在我的代码之后提供。
谢谢你!
public static void main(String[] args)
{
Kernel kernel = new Kernel();
Convolute convolute = new Convolute();
int[][] matrixA = convolute.MATRIX_A;
int[][] kernelVertical = kernel.VERTICAL;
int[][] resultArray = new int[4][4];
int tempMatrix = 0, sumMatrix = 0; // declare temporary matrix and sumMatrix to take all the sum of each product array
int matrixRowA = 0, matrixColumnA = 0; // declare variable for matrix row and column
int convoluteRowControl = 2, convoluteColumnControl = 2; // this variable is to control moving of the kernel through the convolute
while(convoluteRowControl < matrixA.length) // while loop stops when convoluteRowControl points to 6
{
for(int kernelRow = 0; kernelRow < kernelVertical.length; kernelRow++) // this loop will stop when kernelRow is 3
{
for(int kernelColumn = 0; kernelColumn < kernelVertical[kernelRow].length; kernelColumn++) // this loop will stop when kernelColumn is 3
{
tempMatrix = matrixA[matrixRowA][matrixColumnA] * kernelVertical[kernelRow][kernelColumn]; // ERROR IS HERE!!
sumMatrix += tempMatrix; // sum all of the matrix calculated
matrixColumnA++; // re-initialize matrixColumnA to move to the next column element in matrixA
}
matrixRowA++; // re-initialize matrixRowA to move to the next row element in matrixA
matrixColumnA = convoluteColumnControl - 2; // re-initialize matrixColumnA back to the original specified range
}
for(int row = 0; row < resultArray.length; row++) // this loop is used to store sumMatrix calculated in the above loop to each element of the array
{ // loop stops at 5
for(int column = 0; column < resultArray[row].length; column++)
{
resultArray[row][column] = sumMatrix; // store sumMatrix into each element of the array
}
}
++convoluteColumnControl; // re-initialize convoluteColumnControl so that the kernel can move to the next column
if(matrixColumnA < 5) // if kernel get to the last column of its size, reset the row and move to the next column again
{ // this will stop when kernel get to the final column of the convolute
matrixRowA = convoluteRowControl - 2; // reset row back to the the top kernel
matrixColumnA = convoluteColumnControl - 2; // set new starting limit for the column in the kernel
}
if(matrixColumnA == 5) // when matrixColumnA is 5 (which means the final column of the convolute) this IF is executed
{ // to set the new row for the kernel
++convoluteRowControl; // convolteRowControl increase by 1 to set a new row limit for the kernel in convolution
matrixRowA = convoluteRowControl - 2; // reset matrixRowA equivalent to the starting of the new kernel
}
}
}
public class Convolute
{
/*
* ARRAY_A contains a 6x6 matrix
*/
public static final int[][] MATRIX_A =
{
{10, 10, 10, 0, 0, 0},
{10, 10, 10, 0, 0, 0},
{10, 10, 10, 0, 0, 0},
{10, 10, 10, 0, 0, 0},
{10, 10, 10, 0, 0, 0},
{10, 10, 10, 0, 0, 0}
};
}
public class Kernel
{
/*
* HORIZONTAL - A kernel that detects horizontal lines.
*/
public static final int[][] HORIZONTAL =
{
{ 1, 1, 1},
{ 0, 0, 0},
{-1, -1, -1}
};
/*
* VERTICAL - A kernel that detects vertical lines.
*/
public static final int[][] VERTICAL =
{
{ 1, 0, -1},
{ 1, 0, -1},
{ 1, 0, -1}
};
}
解决方案
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