Skip to content

Commit d5c1731

Browse files
sameersameer
committed
first pass implementation, w/o image edge handling
1 parent da0754c commit d5c1731

File tree

5 files changed

+124
-12
lines changed

5 files changed

+124
-12
lines changed

Diff for: ‎.travis.yml

+1-1
Original file line numberDiff line numberDiff line change
@@ -21,7 +21,7 @@ install:
2121
- stat /home/travis/intelFPGA/19.1/modelsim_ase || (curl 'http://download.altera.com/akdlm/software/acdsinst/19.1std/670/ib_installers/ModelSimSetup-19.1.0.670-linux.run' -o ModelSimSetup.run && chmod +x ModelSimSetup.run && travis_wait 30 ./ModelSimSetup.run --mode unattended --accept_eula 1 && sed -i 's/linux_rh60/linux/g' /home/travis/intelFPGA/19.1/modelsim_ase/vco )
2222
script:
2323
- export PATH=$PATH:/home/travis/intelFPGA/19.1/modelsim_ase/bin
24-
# - cd ./sim/demosaic_tb/ && hdlmake fetch && hdlmake && make
24+
- cd ./sim/malvar_he_cutler_demosaic_tb/ && hdlmake fetch && hdlmake && make
2525
- cd -
2626

2727
cache:

Diff for: ‎sim/demosaic_tb/Manifest.py

-9
This file was deleted.

Diff for: ‎src/Manifest.py

+1-1
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,3 @@
11
files = [
2-
# "demosaic.sv"
2+
"malvar_he_cutler_demosaic.sv"
33
]

Diff for: ‎src/malvar_he_cutler_demosaic.sv

+121
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,121 @@
1+
module malvar_he_cutler_demosaic (
2+
input logic [7:0] pixel_mosaic_matrix [0:5] [0:5],
3+
// 0 = Blue
4+
// 1 = Green in blue row (in BGGR, the first green)
5+
// 2 = Green in red row (in BGGR, the second green)
6+
// 3 = Red
7+
input logic [1:0] center_pixel_type,
8+
output logic [23:0] center_pixel_rgb
9+
);
10+
11+
logic [11:0] green_estimate_at_non_green;
12+
always_comb
13+
begin
14+
green_estimate_at_non_green = 12'd4 * 12'(pixel_mosaic_matrix[2][2]);
15+
16+
green_estimate_at_non_green += 12'd2 * 12'(pixel_mosaic_matrix[1][2]);
17+
green_estimate_at_non_green += 12'd2 * 12'(pixel_mosaic_matrix[2][1]);
18+
green_estimate_at_non_green += 12'd2 * 12'(pixel_mosaic_matrix[2][3]);
19+
green_estimate_at_non_green += 12'd2 * 12'(pixel_mosaic_matrix[3][2]);
20+
21+
green_estimate_at_non_green -= 12'(pixel_mosaic_matrix[0][2]);
22+
green_estimate_at_non_green -= 12'(pixel_mosaic_matrix[2][0]);
23+
green_estimate_at_non_green -= 12'(pixel_mosaic_matrix[2][4]);
24+
green_estimate_at_non_green -= 12'(pixel_mosaic_matrix[4][2]);
25+
26+
green_estimate_at_non_green /= 12'd8;
27+
end
28+
29+
logic [11:0] other_estimate_at_non_green;
30+
always_comb
31+
begin
32+
other_estimate_at_non_green = 12'd6 * 12'(pixel_mosaic_matrix[2][2]);
33+
34+
other_estimate_at_non_green += 12'd2 * 12'(pixel_mosaic_matrix[1][1]);
35+
other_estimate_at_non_green += 12'd2 * 12'(pixel_mosaic_matrix[1][3]);
36+
other_estimate_at_non_green += 12'd2 * 12'(pixel_mosaic_matrix[3][3]);
37+
other_estimate_at_non_green += 12'd2 * 12'(pixel_mosaic_matrix[3][1]);
38+
39+
other_estimate_at_non_green -= (12'd3 * 12'(pixel_mosaic_matrix[0][2])) / 12'd2;
40+
other_estimate_at_non_green -= (12'd3 * 12'(pixel_mosaic_matrix[4][2])) / 12'd2;
41+
other_estimate_at_non_green -= (12'd3 * 12'(pixel_mosaic_matrix[2][0])) / 12'd2;
42+
other_estimate_at_non_green -= (12'd3 * 12'(pixel_mosaic_matrix[2][4])) / 12'd2;
43+
44+
other_estimate_at_non_green /= 12'd8;
45+
end
46+
47+
logic [11:0] non_green_estimate_in_same_row_at_green;
48+
always_comb
49+
begin
50+
non_green_estimate_in_same_row_at_green = 12'd5 * 12'(pixel_mosaic_matrix[2][2]);
51+
52+
non_green_estimate_in_same_row_at_green += 12'd4 * 12'(pixel_mosaic_matrix[2][1]);
53+
non_green_estimate_in_same_row_at_green += 12'd4 * 12'(pixel_mosaic_matrix[2][3]);
54+
55+
non_green_estimate_in_same_row_at_green += 12'(pixel_mosaic_matrix[0][2]) / 12'd2;
56+
non_green_estimate_in_same_row_at_green += 12'(pixel_mosaic_matrix[4][2]) / 12'd2;
57+
58+
non_green_estimate_in_same_row_at_green -= 12'(pixel_mosaic_matrix[2][0]);
59+
non_green_estimate_in_same_row_at_green -= 12'(pixel_mosaic_matrix[2][4]);
60+
61+
non_green_estimate_in_same_row_at_green -= 12'(pixel_mosaic_matrix[1][1]);
62+
non_green_estimate_in_same_row_at_green -= 12'(pixel_mosaic_matrix[1][3]);
63+
non_green_estimate_in_same_row_at_green -= 12'(pixel_mosaic_matrix[3][3]);
64+
non_green_estimate_in_same_row_at_green -= 12'(pixel_mosaic_matrix[3][1]);
65+
66+
non_green_estimate_in_same_row_at_green /= 12'd8;
67+
end
68+
69+
logic [11:0] non_green_estimate_in_different_row_at_green;
70+
always_comb
71+
begin
72+
non_green_estimate_in_different_row_at_green = 12'd5 * 12'(pixel_mosaic_matrix[2][2]);
73+
74+
non_green_estimate_in_different_row_at_green += 12'd4 * 12'(pixel_mosaic_matrix[1][2]);
75+
non_green_estimate_in_different_row_at_green += 12'd4 * 12'(pixel_mosaic_matrix[3][2]);
76+
77+
non_green_estimate_in_different_row_at_green += 12'(pixel_mosaic_matrix[2][0]) / 12'd2;
78+
non_green_estimate_in_different_row_at_green += 12'(pixel_mosaic_matrix[2][4]) / 12'd2;
79+
80+
non_green_estimate_in_different_row_at_green -= 12'(pixel_mosaic_matrix[0][2]);
81+
non_green_estimate_in_different_row_at_green -= 12'(pixel_mosaic_matrix[4][2]);
82+
83+
non_green_estimate_in_different_row_at_green -= 12'(pixel_mosaic_matrix[1][1]);
84+
non_green_estimate_in_different_row_at_green -= 12'(pixel_mosaic_matrix[1][3]);
85+
non_green_estimate_in_different_row_at_green -= 12'(pixel_mosaic_matrix[3][3]);
86+
non_green_estimate_in_different_row_at_green -= 12'(pixel_mosaic_matrix[3][1]);
87+
88+
non_green_estimate_in_different_row_at_green /= 12'd8;
89+
end
90+
91+
always_comb
92+
begin
93+
case (center_pixel_type)
94+
2'b11: // Red
95+
begin
96+
center_pixel_rgb[2] = pixel_mosaic_matrix[2][2];
97+
center_pixel_rgb[1] = 8'(green_estimate_at_non_green);
98+
center_pixel_rgb[0] = 8'(other_estimate_at_non_green);
99+
end
100+
2'b10: // Green in red row
101+
begin
102+
center_pixel_rgb[2] = 8'(non_green_estimate_in_same_row_at_green);
103+
center_pixel_rgb[1] = pixel_mosaic_matrix[2][2];
104+
center_pixel_rgb[0] = 8'(non_green_estimate_in_different_row_at_green);
105+
end
106+
2'b01: // Green in blue row
107+
begin
108+
center_pixel_rgb[2] = 8'(non_green_estimate_in_different_row_at_green);
109+
center_pixel_rgb[1] = pixel_mosaic_matrix[2][2];
110+
center_pixel_rgb[0] = 8'(non_green_estimate_in_same_row_at_green);
111+
end
112+
2'b00: // Blue
113+
begin
114+
center_pixel_rgb[2] = 8'(other_estimate_at_non_green);
115+
center_pixel_rgb[1] = 8'(green_estimate_at_non_green);
116+
center_pixel_rgb[0] = pixel_mosaic_matrix[2][2];
117+
end
118+
endcase
119+
end
120+
121+
endmodule

Diff for: ‎test/Manifest.py

+1-1
Original file line numberDiff line numberDiff line change
@@ -1,5 +1,5 @@
11
files = [
2-
# "demosaic_tb.sv"
2+
"malvar_he_cutler_demosaic_tb.sv"
33
]
44

55
modules = {

0 commit comments

Comments
 (0)