Convolution filter property page
The MontiVision Convolution filter is used to convolve an image with one or more user defined matrices. If more than one matrix is used, the matrices results can be combined using several different methods. The size of the matrices is fully variable between 1 X 1 and 7 X 7.
| File: | convolution.ax |
| CLSID: | CLSID_MVConvolution |
Supported Interfaces
Supported COM Events
The filter supports following events through the IMVFilterEvents interface. Look at the filter events page for more information.
| Event |
Value |
Description |
| MV_ALGORITHM_START_EVENT |
0 |
A filter starts processing a video frame or sample. |
| MV_ALGORITHM_END_EVENT |
1 |
A filter finishes processing a video frame or sample. |
MV Convolution Property Page
Uses the IMVConvolution interface
Convolution filter property page
| Number of kernels | Specifies the number of kernels convolved with the current image. |
| Selected kernel | Used to select the kernel to be modified. The size of the kernel is changed using the row and column radio boxes. The kernel numerals are modified by changing the values in the edit controls. The kernel is updated after the apply button is clicked. |
| Combination |
Select the method to be used to combine the results of the convolutions. |
| Right shift pixel | Used to scale the kernels convolution results. Every pixel channel convolution result value is divided by 2"Right shift pixel". |
| Anchor | The [x, y] coordinates of the anchor cell in the kernel. The top left corner would be [0, 0] and the bottom right corner would be [Columns-1, Rows-1]. For a 3 by 3 kernel, the coordinates of the geometric centre would be [1, 1]. This specification allows the kernel to be skewed with respect to its geometric centre. |