Erode
ThexFerode
function finds the minimum pixel intensity in the 3x3 neighborhood of a pixel and replaces the pixel intensity with the minimum value.
API Syntax
template void xFerode(xF::Mat & _src_mat, xF::Mat & _dst_mat)
Parameter Descriptions
The following table describes the template and the function parameters.
Parameter | Description |
---|---|
BORDER_TYPE | Border type supported is XF_BORDER_CONSTANT |
SRC_T | Input and output pixel type. Only 8-bit, unsigned, 1 channel is supported (XF_8UC1) |
ROWS | Maximum height of input and output image. (must be a multiple of 8) |
COLS | Maximum width of input and output image. (must be a multiple of 8) |
NPC | Number of pixels to be processed per cycle; possible options are XF_NPPC1 and XF_NPPC8 for 1 pixel and 8 pixel operations respectively. |
_src_mat | Input image |
_dst_mat | Output image |
Resource Utilization
The following table summarizes the resource utilization of the Erosion function generated usingVivado HLS 2017.1version tool for theXilinx Xczu9eg-ffvb1156-1-i-es1FPGA.
Name | Resource Utilization | |
---|---|---|
1 pixel per clock operation | 8 pixel per clock operation | |
300 MHz | 150 MHz | |
BRAM_18K | 3 | 6 |
DSP48E | 0 | 0 |
FF | 342 | 653 |
LUT | 351 | 1316 |
CLB | 79 | 230 |
Performance Estimate
The following table summarizes a performance estimate of the Erosion function for Normal Operation (1 pixel) and Resource Optimized (8 pixel) configurations, generated usingVivado HLS 2017.1tool forXilinx Xczu9eg-ffvb1156-1-i-es1FPGA.
Operating Mode | Latency Estimate | |
---|---|---|
Min (ms) | Max (ms) | |
1 pixel (300 MHz) |
7.0 | 7.0 |
8 pixel (150 MHz) |
1.85 | 1.85 |