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21ReliCosmic
posted about 1 month ago
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# Keeps 589 bright,
boosts jewelry shine,
replaces background,
and maps to Casinofi duotone.
import cv2,
numpy as np
from google.
colab import files
from PIL import Image
# Upload your image when prompted
up = files.
upload
()
fn = list
(up.keys()
)
[0]
img_bgr = cv2.
imdecode
(np.frombuffer(up[fn]
,
np.
uint8),
cv2.
IMREAD_COLOR)
# --- Palette
(BGR)
---
HEX = lambda h:
(int(h[5:7]
,
16),
int
(h[3:5]
,
16),
int
(h[1:3]
,
16))
SHADOW = np.
array
(HEX("#0F1011")
,
np.
float32)
MID = np.
array
(HEX("#8E7A55")
,
np.
float32)
HILITE = np.
array
(HEX("#E6D2A1")
,
np.
float32)
HILITE_PLUS = np.
array
(HEX("#EBDDB7")
,
np.
float32) # extra-bright cream for 589
# --- Helper: gradient map
(shadow ->
mid -> highlight) ---
def gradient_map
(gray01)
:
g = gray01
[...,None]
t1 = np.
clip
(g/0.5, 0, 1)
t2 = np.
clip
((g-0.5)
/0.
5,
0,
1)
low = SHADOW*
(1-t1)
+ MID*t1
high = MID*
(1-t2)
+ HILITE*t2
return np.
where
(g<=0.5, low, high)
hsv = cv2.
cvtColor
(img_bgr, cv2.COLOR_BGR2HSV)
# --- Masks ---
# Background
(yellow)
range
bg_mask = cv2.
inRange
(hsv, (15, 120, 120)
,
(40, 255, 255)
) # tune if needed
# Shirt
(blue)
range – helpful for separate contrast if you want
shirt_mask = cv2.
inRange
(hsv, (95, 80, 40)
,
(130, 255, 255)
)
# Numbers “589”
(white-ish areas on shirt)
gray = cv2.
cvtColor
(img_bgr, cv2.COLOR_BGR2GRAY)
num_mask = cv2.
threshold
(gray, 210, 255, cv2.THRESH_BINARY)
[1]
# bright white
# Jewelry
(gold/yellow highlights)
jew_mask = cv2.
inRange
(hsv, (12, 60, 120)
,
(30, 255, 255)
) # gold tones
# Clean masks a bit
def clean
(m, k=3)
:
kernel = cv2.
getStructuringElement
(cv2.MORPH_ELLIPSE, (k,k)
)
m = cv2.
morphologyEx
(m, cv2.MORPH_OPEN, kernel, iterations=1)
m = cv2.
morphologyEx
(m, cv2.MORPH_CLOSE, kernel, iterations=1)
return m
bg_mask = clean
(bg_mask, 5)
shirt_mask= clean
(shirt_mask, 5)
num_mask = clean
(num_mask, 3)
jew_mask = clean
(jew_mask, 3)
# --- Step 1: Replace background with deep charcoal ---
out = img_bgr.
copy
()
out
[bg_mask>
0] = SHADOW
# --- Step 2: Convert subject to Casinofi duotone ---
# Work on non-background regions
subj = out.
copy
()
subj_mask =
(bg_mask==0)
.
astype
(np.uint8)
*255
subj_gray = cv2.
cvtColor
(subj, cv2.COLOR_BGR2GRAY)
.
astype
(np.float32)
/255.
0
mapped = gradient_map
(subj_gray)
.
astype
(np.uint8)
mapped = cv2.
bitwise_and
(mapped, mapped, mask=subj_mask)
bg_area = cv2.
bitwise_and
(out, out, mask=bg_mask)
out = cv2.
add
(mapped, bg_area)
# --- Step 3: Boost numbers “589” to brighter cream and keep edges crisp ---
num_rgb = np.
zeros_like
(out, dtype=np.uint8)
num_rgb
[:]
= HILITE_PLUS
num_layer = cv2.
bitwise_and
(num_rgb, num_rgb, mask=num_mask)
out = cv2.
bitwise_and
(out, out, mask=cv2.bitwise_not(num_mask)
)
out = cv2.
add
(out, num_layer)
# Optional: thin dark stroke around numbers
edges = cv2.
Canny
(num_mask, 50, 150)
stroke = cv2.
dilate
(edges, np.ones((2,2)
,
np.
uint8),
iterations=1)
out
[stroke>
0] =
(out[stroke>
0]*0 + SHADOW*0.
9).
astype
(np.uint8)
# --- Step 4: Jewelry shine
(Screen-like brighten in cream)
---
# Create a cream layer and blend additively where jewelry mask is
j_layer = np.
zeros_like
(out, dtype=np.float32)
j_layer
[:]
= HILITE
j_mask_f =
(jew_mask.astype(np.float32)
/255.
0)
[...,None]
out_f = out.
astype
(np.float32)
out = np.
clip
(out_f + j_layer*0.35*j_mask_f, 0, 255)
.
astype
(np.uint8)
# --- Step 5: Gentle contrast pop on subject only ---
subj_mask3 = cv2.
merge
([subj_mask, subj_mask, subj_mask]
)
subj_pix = np.
where
(subj_mask3>
0)
sub = out.
astype
(np.float32)
sub
[subj_pix]
= np.
clip
((sub[subj_pix]
-20)*1.
08 + 20,
0,
255)
out = sub.
astype
(np.uint8)
# Save
cv2.
imwrite
("output_casinofi.png", out)
files.
download
("output_casinofi.png")
print
("Done. Download output_casinofi.png")
Generation parameters
Model used
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