def getpixel(self, x, y):
_x = int((x + 0.5) * self.boxsize)
_y = int((y + 0.5) * self.boxsize)
qpx = QPixmap.grabWidget(self)
image = QImage(qpx.toImage())
color = QColor(image.pixel(_x, _y))
return color
class SetPixelFloat(UsesQApplication):
'''Test case for calling setPixel with float as argument'''
def setUp(self):
#Acquire resources
super(SetPixelFloat, self).setUp()
self.color = qRgb(255, 0, 0)
self.image = QImage(200, 200, QImage.Format_RGB32)
def tearDown(self):
#Release resources
del self.color
del self.image
super(SetPixelFloat, self).tearDown()
def testFloat(self):
#QImage.setPixel(float, float, color) - Implicit conversion
self.image.setPixel(3.14, 4.2, self.color)
self.assertEqual(self.image.pixel(3.14, 4.2), self.color)
class ImagenQImage(BaseImagen):
def __init__(self):
super(ImagenQImage, self).__init__()
self.mode = "No implementado"
@property
def size(self):
return (self.img.width(), self.img.height())
def fromfile(self, filename):
self.img = QImage(filename)
def from_instance(self, qimage):
self.img = qimage
def empty(self, size, mode=QImage.Format_RGB888):
self.img = QImage(size[0], size[1], mode)
self.img.fill(qRgb(0, 0, 0)) #Rellenamos la imagen con negro
def getpixel(self, xy):
color = self.img.pixel(xy[0], xy[1])
return (qRed(color), qGreen(color), qBlue(color))
def putpixel(self, xy, value):
self.img.setPixel(xy[0], xy[1], qRgb(value[0], value[1], value[2]))
def get_img(self):
return self.img
def save(self, filename):
self.img.save(filename, format="BMP", quality=100)
def from_opencv(self, img_opencv):
dst = cv2.cvtColor(img_opencv, cv2.COLOR_BGR2RGB)
qim = QImage(dst.data, dst.shape[1], dst.shape[0], dst.strides[0],
QImage.Format_RGB888)
self.img = qim.copy()
class ImagenQImage(BaseImagen):
def __init__(self):
super(ImagenQImage, self).__init__()
self.mode = "No implementado"
@property
def size(self):
return (self.img.width(), self.img.height())
def fromfile(self, filename):
self.img = QImage(filename)
def from_instance(self, qimage):
self.img = qimage
def empty(self, size, mode=QImage.Format_RGB888):
self.img = QImage(size[0], size[1], mode)
self.img.fill(qRgb(0,0,0))#Rellenamos la imagen con negro
def getpixel(self, xy):
color = self.img.pixel(xy[0], xy[1])
return (qRed(color), qGreen(color), qBlue(color))
def putpixel(self, xy, value):
self.img.setPixel(xy[0], xy[1], qRgb(value[0], value[1], value[2]))
def get_img(self):
return self.img
def save(self, filename):
self.img.save(filename, format="BMP", quality=100)
def from_opencv(self, img_opencv):
dst = cv2.cvtColor(img_opencv, cv2.COLOR_BGR2RGB)
qim = QImage(dst.data, dst.shape[1], dst.shape[0], dst.strides[0], QImage.Format_RGB888)
self.img = qim.copy()
from PySide.QtCore import QCoreApplication
from PySide.QtGui import QImage
if __name__ == "__main__":
app = QCoreApplication([])
img = QImage("lenna.png")
w, h = img.size().width(), img.size().width()
for p in ((x, y) for x in range(w) for y in range(h)):
colour = img.pixel(p[0], p[1]) # AARRGGBB
r = (colour >> 16) & 0xFF
g = (colour >> 8) & 0xFF
b = colour & 0xFF
avg = round((r + g + b) / 3) # Naïve method (no colour weighting)
new_colour = 0xff000000 + (avg << 16) + (avg << 8) + avg
img.setPixel(p[0], p[1], new_colour)
img.save("output.png")
from PySide.QtCore import QCoreApplication
from PySide.QtGui import QImage
if __name__ == "__main__":
app = QCoreApplication([])
img = QImage("lenna.png")
w, h = img.size().width(), img.size().width()
for p in ((x, y) for x in range(w) for y in range(h)):
colour = img.pixel(p[0], p[1]) # AARRGGBB
r = (colour >> 16) & 0xFF
g = (colour >> 8) & 0xFF
b = colour & 0xFF
avg = round((r + g + b) / 3) # Naïve method (no colour weighting)
new_colour = 0xff000000 + (avg << 16) + (avg << 8) + avg
img.setPixel(p[0], p[1], new_colour)
img.save("output.png")
