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参数资料
| 型号： | LF2301JC25 |
| 厂商： | LOGIC DEVICES INC |
| 元件分类： | 数字信号处理外设 |
| 英文描述： | Image Resampling Sequencer |
| 中文描述： | 12-BIT, DSP-VIDEO IMAGING, PQCC68 |
| 封装： | PLASTIC, LCC-68 |
| 文件页数： | 7/18页 |
| 文件大小： | 333K |
| 代理商： | LF2301JC25 |
DEVICES INCORPORATED
Video Imaging Products
2-7
LF2301
Image Resampling Sequencer
08/16/2000–LDS.2301-H
Static Filter
Static filtering at real-time video
rates can be performed as shown in
Figure 5. This mode is selected by
loading M
1-0
with “00” for a clock-
wise spiral walk. A counterclock-
wise spiral walk could be selected
by loading M
1-0
with “10.” In this
example, a static filter with a kernel
size of 3 x 3 pixels is desired. Load-
ing K
3-0
with “0010” selects a kernel
size of 3 x 3. The first pixel selected
is determined by x
0
and y
0
. In this
example, the first pixel is (6,6). In
this case, the LF2301s should ad-
dress consecutive pixels during each
spiral walk. For this to occur, FOV
must be set to 1 (F
2-0
loaded with
“001”).
After the last pixel of a spiral walk
has been selected, the next pixel
address is determined by adding
dx/du to the current X address and
by adding dy/du to the current Y
address (unless the kernel just
completed was the last for that line).
At the end of the first spiral walk,
pixel (7,5) is addressed. Since the
first pixel of the next spiral walk
should be (7,6), dx/du is selected to
be 0 and dy/du is selected to be 1.
After the last pixel of the last spiral
walk on the first line has been
selected, the first pixel address of
the second line is determined by
adding dx/dv to x
0
and by adding
dy/dv to y
0
. Since the first pixel of
the first spiral walk on the second
line should be (6,7), dx/dv is
selected to be 0 and dy/dv is se-
lected to be 1. Second order differ-
ential terms are not used in this
filter and are therefore set to 0.
UMIN and VMIN are both selected
to be 6. UMAX and VMAX are both
selected to be 7. Table 5 shows the
values loaded into all Parameter
Registers. Table 6 shows the ITS
outputs for the 3 x 3 static filter.
T
ABLE
5. P
ARAMETER
R
EGISTERS
ADDR
Row (HEX) Column (HEX)
0000
000
0001
FFF
0010
0C0
0011
000
0100
000
0101
100
0110
000
0111
200
1000
000
1001
000
1010
000
1011
000
1100
000
1101
000
1110
006
1111
007
000
FFF
0C0
100
000
101
000
201
000
000
000
000
000
000
006
007
1 = 1st pixel of 1st spiral walk,
2 = 1st pixel of 2nd spiral walk, etc.
4
6
7
8
9
5
6
7
8
1
2
5
F
IGURE
5. 3
×
3 S
TATIC
F
ILTER
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LF2301JC55 | 制造商:LOGIC 制造商全称:LOGIC 功能描述:Image Resampling Sequencer |
| LF2301JC66 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Video Sequencer |
| LF-230FU | 制造商:NEC 制造商全称:NEC 功能描述:Noise Filters |
| LF-230N | 制造商:NEC 制造商全称:NEC 功能描述:Noise Filters |
| LF-230P | 制造商:NEC 制造商全称:NEC 功能描述:Noise Filters |
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