本文整理汇总了Python中matplotlib._image.frombyte函数的典型用法代码示例。如果您正苦于以下问题：Python frombyte函数的具体用法？Python frombyte怎么用？Python frombyte使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了frombyte函数的8个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Python代码示例。
示例1: make_image
def make_image(self, renderer, magnification=1.0):
if self._A is None:
raise RuntimeError('You must first set the image '
'array or the image attribute')
if self._imcache is None:
A = self._A
if self.origin == 'upper':
A = A[::-1]
if A.dtype == np.uint8 and len(A.shape) == 3:
im = _image.frombyte(A, 0)
im.is_grayscale = False
else:
if self._rgbacache is None:
x = self.to_rgba(A, bytes=True)
self._rgbacache = x
else:
x = self._rgbacache
im = _image.frombyte(x, 0)
if len(A.shape) == 2:
im.is_grayscale = self.cmap.is_gray()
else:
im.is_grayscale = False
self._imcache = im
else:
im = self._imcache
# image input dimensions
im.reset_matrix()
im.set_interpolation(self._interpd[self._interpolation])
im.set_resample(self._resample)
l, b, r, t = self.get_window_extent(renderer).extents # bbox.extents
widthDisplay = abs(round(r) - round(l))
heightDisplay = abs(round(t) - round(b))
widthDisplay *= magnification
heightDisplay *= magnification
numrows, numcols = self._A.shape[:2]
if (not self.interp_at_native and
widthDisplay == numcols and heightDisplay == numrows):
im.set_interpolation(0)
# resize viewport to display
rx = widthDisplay / numcols
ry = heightDisplay / numrows
#im.apply_scaling(rx*sx, ry*sy)
im.apply_scaling(rx, ry)
#im.resize(int(widthDisplay+0.5), int(heightDisplay+0.5),
# norm=self._filternorm, radius=self._filterrad)
im.resize(int(widthDisplay), int(heightDisplay),
norm=self._filternorm, radius=self._filterrad)
return im
开发者ID:agardelein，项目名称:matplotlib，代码行数:56，代码来源:image.py
示例2: make_image
def make_image(self, renderer, magnification=1.0):
if self._A is None:
raise RuntimeError("You must first set the image array or the image attribute")
if self._imcache is None:
if self._A.dtype == np.uint8 and len(self._A.shape) == 3:
im = _image.frombyte(self._A, 0)
im.is_grayscale = False
else:
if self._rgbacache is None:
x = self.to_rgba(self._A, self._alpha, bytes=True)
self._rgbacache = x
else:
x = self._rgbacache
im = _image.frombyte(x, 0)
if len(self._A.shape) == 2:
im.is_grayscale = self.cmap.is_gray()
else:
im.is_grayscale = False
self._imcache = im
if self.origin == "upper":
im.flipud_in()
else:
im = self._imcache
# image input dimensions
im.reset_matrix()
im.set_interpolation(self._interpd[self._interpolation])
im.set_resample(self._resample)
l, b, r, t = self.get_window_extent(renderer).extents # bbox.extents
widthDisplay = (round(r) + 0.5) - (round(l) - 0.5)
heightDisplay = (round(t) + 0.5) - (round(b) - 0.5)
widthDisplay *= magnification
heightDisplay *= magnification
numrows, numcols = self._A.shape[:2]
# resize viewport to display
rx = widthDisplay / numcols
ry = heightDisplay / numrows
# im.apply_scaling(rx*sx, ry*sy)
im.apply_scaling(rx, ry)
# im.resize(int(widthDisplay+0.5), int(heightDisplay+0.5),
# norm=self._filternorm, radius=self._filterrad)
im.resize(int(widthDisplay), int(heightDisplay), norm=self._filternorm, radius=self._filterrad)
return im
开发者ID:dhomeier，项目名称:matplotlib-py3，代码行数:50，代码来源:image.py
示例3: make_image
def make_image(self, magnification=1.0):
if self._A is None:
raise RuntimeError('You must first set the image array')
x = self.to_rgba(self._A, self._alpha, bytes=True)
self.magnification = magnification
# if magnification is not one, we need to resize
ismag = magnification!=1
#if ismag: raise RuntimeError
if ismag:
isoutput = 0
else:
isoutput = 1
im = _image.frombyte(x, isoutput)
fc = self.figure.get_facecolor()
im.set_bg( *mcolors.colorConverter.to_rgba(fc, 0) )
im.is_grayscale = (self.cmap.name == "gray" and
len(self._A.shape) == 2)
if ismag:
numrows, numcols = self.get_size()
numrows *= magnification
numcols *= magnification
im.set_interpolation(_image.NEAREST)
im.resize(numcols, numrows)
if self.origin=='upper':
im.flipud_out()
return im
开发者ID:CTPUG，项目名称:matplotlib，代码行数:29，代码来源:image.py
示例4: finish_gl_drawing
def finish_gl_drawing(glcanvas, renderer, tag, trans):
renderer._k_globj += 1
if (renderer._k_globj != renderer._num_globj): return
#print ("finish gl draw", renderer._k_globj, renderer._num_globj)
if not glcanvas._hittest_map_update:
glcanvas._no_hl = False
id_dict = glcanvas.draw_mpl_artists(tag)
im = glcanvas.read_data(tag) # im : image, im2: id, im3: depth
gc = renderer.new_gc()
x, y =trans.transform(frame_range[0:2])
im = frombyte(im, 1)
if not isMPL2:
im.is_grayscale = False ## this is needed to print in MPL1.5
renderer.draw_image(gc, round(x), round(y), im)
gc.restore()
else:
#
# need to draw twice due to buffering of pixel reading
#
glcanvas._no_hl = True
glcanvas._hittest_map_update = True
id_dict = glcanvas.draw_mpl_artists(tag)
# im : image, im2, im2d: id, im3: depth
im, im2, im2d, im3 = glcanvas.read_data(tag)
glcanvas._hittest_map_update = False
id_dict = glcanvas.draw_mpl_artists(tag)
im = glcanvas.read_data(tag) # im : image, im2: id, im3: depth
glcanvas._hittest_map_update = True
gc = renderer.new_gc()
x, y =trans.transform(frame_range[0:2])
im = frombyte(im, 1)
if not isMPL2:
im.is_grayscale = False ## this is needed to print in MPL1.5
if renderer.gl_svg_rescale:
### svg renderer has image_dpi = 100 (not 72)
### therefore width and height needs to be set
x2, y2 =trans.transform(frame_range[2:])
renderer.draw_image(gc, round(x), round(y), im,
dx=round(x2-x), dy = round(y2-y))
else:
renderer.draw_image(gc, round(x), round(y), im)
renderer.update_id_data((x, y, id_dict, im2, im2d, im3), tag = tag)
gc.restore()
tag._gl_img = im
开发者ID:piScope，项目名称:piScope，代码行数:47，代码来源:art3d_gl.py
示例5: _get_unsampled_image
def _get_unsampled_image(self, A, image_extents, viewlim):
"""
convert numpy array A with given extents ([x1, x2, y1, y2] in
data coordinate) into the Image, given the viewlim (should be a
bbox instance). Image will be clipped if the extents is
significantly larger than the viewlim.
"""
xmin, xmax, ymin, ymax = image_extents
dxintv = xmax-xmin
dyintv = ymax-ymin
# the viewport scale factor
if viewlim.width == 0.0 and dxintv == 0.0:
sx = 1.0
else:
sx = dxintv/viewlim.width
if viewlim.height == 0.0 and dyintv == 0.0:
sy = 1.0
else:
sy = dyintv/viewlim.height
numrows, numcols = A.shape[:2]
if sx > 2:
x0 = (viewlim.x0-xmin)/dxintv * numcols
ix0 = max(0, int(x0 - self._filterrad))
x1 = (viewlim.x1-xmin)/dxintv * numcols
ix1 = min(numcols, int(x1 + self._filterrad))
xslice = slice(ix0, ix1)
xmin_old = xmin
xmin = xmin_old + ix0*dxintv/numcols
xmax = xmin_old + ix1*dxintv/numcols
dxintv = xmax - xmin
sx = dxintv/viewlim.width
else:
xslice = slice(0, numcols)
if sy > 2:
y0 = (viewlim.y0-ymin)/dyintv * numrows
iy0 = max(0, int(y0 - self._filterrad))
y1 = (viewlim.y1-ymin)/dyintv * numrows
iy1 = min(numrows, int(y1 + self._filterrad))
if self.origin == 'upper':
yslice = slice(numrows-iy1, numrows-iy0)
else:
yslice = slice(iy0, iy1)
ymin_old = ymin
ymin = ymin_old + iy0*dyintv/numrows
ymax = ymin_old + iy1*dyintv/numrows
dyintv = ymax - ymin
sy = dyintv/viewlim.height
else:
yslice = slice(0, numrows)
if xslice != self._oldxslice or yslice != self._oldyslice:
self._imcache = None
self._oldxslice = xslice
self._oldyslice = yslice
if self._imcache is None:
if self._A.dtype == np.uint8 and self._A.ndim == 3:
im = _image.frombyte(self._A[yslice,xslice,:], 0)
im.is_grayscale = False
else:
if self._rgbacache is None:
x = self.to_rgba(self._A, self._alpha, bytes=True)
self._rgbacache = x
else:
x = self._rgbacache
im = _image.frombyte(x[yslice,xslice,:], 0)
if self._A.ndim == 2:
im.is_grayscale = self.cmap.is_gray()
else:
im.is_grayscale = False
self._imcache = im
if self.origin=='upper':
im.flipud_in()
else:
im = self._imcache
return im, xmin, ymin, dxintv, dyintv, sx, sy
开发者ID:CTPUG，项目名称:matplotlib，代码行数:80，代码来源:image.py
示例6: _get_unsampled_image
def _get_unsampled_image(self, A, image_extents, viewlim):
"""
convert numpy array A with given extents ([x1, x2, y1, y2] in
data coordinate) into the Image, given the viewlim (should be a
bbox instance). Image will be clipped if the extents is
significantly larger than the viewlim.
"""
xmin, xmax, ymin, ymax = image_extents
dxintv = xmax-xmin
dyintv = ymax-ymin
# the viewport scale factor
if viewlim.width == 0.0 and dxintv == 0.0:
sx = 1.0
else:
sx = dxintv/viewlim.width
if viewlim.height == 0.0 and dyintv == 0.0:
sy = 1.0
else:
sy = dyintv/viewlim.height
numrows, numcols = A.shape[:2]
if sx > 2:
x0 = (viewlim.x0-xmin)/dxintv * numcols
ix0 = max(0, int(x0 - self._filterrad))
x1 = (viewlim.x1-xmin)/dxintv * numcols
ix1 = min(numcols, int(x1 + self._filterrad))
xslice = slice(ix0, ix1)
xmin_old = xmin
xmin = xmin_old + ix0*dxintv/numcols
xmax = xmin_old + ix1*dxintv/numcols
dxintv = xmax - xmin
sx = dxintv/viewlim.width
else:
xslice = slice(0, numcols)
if sy > 2:
y0 = (viewlim.y0-ymin)/dyintv * numrows
iy0 = max(0, int(y0 - self._filterrad))
y1 = (viewlim.y1-ymin)/dyintv * numrows
iy1 = min(numrows, int(y1 + self._filterrad))
yslice = slice(iy0, iy1)
ymin_old = ymin
ymin = ymin_old + iy0*dyintv/numrows
ymax = ymin_old + iy1*dyintv/numrows
dyintv = ymax - ymin
sy = dyintv/viewlim.height
else:
yslice = slice(0, numrows)
if xslice != self._oldxslice or yslice != self._oldyslice:
self._imcache = None
self._oldxslice = xslice
self._oldyslice = yslice
if self._imcache is None:
A = self._A
if self.origin == 'upper':
A = A[::-1]
if A.dtype == np.uint8 and A.ndim == 3:
im = _image.frombyte(A[yslice, xslice, :], 0)
im.is_grayscale = False
else:
if self._rgbacache is None:
x = self.to_rgba(A, bytes=False)
# Avoid side effects: to_rgba can return its argument
# unchanged.
if np.may_share_memory(x, A):
x = x.copy()
# premultiply the colors
x[..., 0:3] *= x[..., 3:4]
x = (x * 255).astype(np.uint8)
self._rgbacache = x
else:
x = self._rgbacache
im = _image.frombyte(x[yslice, xslice, :], 0)
if self._A.ndim == 2:
im.is_grayscale = self.cmap.is_gray()
else:
im.is_grayscale = False
self._imcache = im
else:
im = self._imcache
return im, xmin, ymin, dxintv, dyintv, sx, sy
开发者ID:SungSingSong，项目名称:matplotlib，代码行数:85，代码来源:image.py
示例7: make_image
def make_image(self, magnification=1.0):
if self._A is None:
raise RuntimeError('You must first set the image array or the image attribute')
xmin, xmax, ymin, ymax = self.get_extent()
dxintv = xmax-xmin
dyintv = ymax-ymin
# the viewport scale factor
sx = dxintv/self.axes.viewLim.width
sy = dyintv/self.axes.viewLim.height
numrows, numcols = self._A.shape[:2]
if sx > 2:
x0 = (self.axes.viewLim.x0-xmin)/dxintv * numcols
ix0 = max(0, int(x0 - self._filterrad))
x1 = (self.axes.viewLim.x1-xmin)/dxintv * numcols
ix1 = min(numcols, int(x1 + self._filterrad))
xslice = slice(ix0, ix1)
xmin_old = xmin
xmin = xmin_old + ix0*dxintv/numcols
xmax = xmin_old + ix1*dxintv/numcols
dxintv = xmax - xmin
sx = dxintv/self.axes.viewLim.width
else:
xslice = slice(0, numcols)
if sy > 2:
y0 = (self.axes.viewLim.y0-ymin)/dyintv * numrows
iy0 = max(0, int(y0 - self._filterrad))
y1 = (self.axes.viewLim.y1-ymin)/dyintv * numrows
iy1 = min(numrows, int(y1 + self._filterrad))
if self.origin == 'upper':
yslice = slice(numrows-iy1, numrows-iy0)
else:
yslice = slice(iy0, iy1)
ymin_old = ymin
ymin = ymin_old + iy0*dyintv/numrows
ymax = ymin_old + iy1*dyintv/numrows
dyintv = ymax - ymin
sy = dyintv/self.axes.viewLim.height
else:
yslice = slice(0, numrows)
if xslice != self._oldxslice or yslice != self._oldyslice:
self._imcache = None
self._oldxslice = xslice
self._oldyslice = yslice
if self._imcache is None:
if self._A.dtype == np.uint8 and len(self._A.shape) == 3:
im = _image.frombyte(self._A[yslice,xslice,:], 0)
im.is_grayscale = False
else:
if self._rgbacache is None:
x = self.to_rgba(self._A, self._alpha)
self._rgbacache = x
else:
x = self._rgbacache
im = _image.fromarray(x[yslice,xslice], 0)
if len(self._A.shape) == 2:
im.is_grayscale = self.cmap.is_gray()
else:
im.is_grayscale = False
self._imcache = im
if self.origin=='upper':
im.flipud_in()
else:
im = self._imcache
fc = self.axes.patch.get_facecolor()
bg = mcolors.colorConverter.to_rgba(fc, 0)
im.set_bg( *bg)
# image input dimensions
im.reset_matrix()
numrows, numcols = im.get_size()
if numrows < 1 or numcols < 1: # out of range
return None
im.set_interpolation(self._interpd[self._interpolation])
im.set_resample(self._resample)
# the viewport translation
tx = (xmin-self.axes.viewLim.x0)/dxintv * numcols
ty = (ymin-self.axes.viewLim.y0)/dyintv * numrows
l, b, r, t = self.axes.bbox.extents
widthDisplay = (round(r*magnification) + 0.5) - (round(l*magnification) - 0.5)
heightDisplay = (round(t*magnification) + 0.5) - (round(b*magnification) - 0.5)
im.apply_translation(tx, ty)
# resize viewport to display
rx = widthDisplay / numcols
ry = heightDisplay / numrows
im.apply_scaling(rx*sx, ry*sy)
im.resize(int(widthDisplay+0.5), int(heightDisplay+0.5),
norm=self._filternorm, radius=self._filterrad)
return im
开发者ID:zoccolan，项目名称:eyetracker，代码行数:99，代码来源:image.py
示例8: _byte2image
def _byte2image(self, img):
image = frombyte(np.flipud(img), 1)
#image.flipud_out()
return image
开发者ID:piScope，项目名称:piScope，代码行数:4，代码来源:backend_wxagg_mod.py
注：本文中的matplotlib._image.frombyte函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。 |
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