我们从Python开源项目中,提取了以下2个代码示例,用于说明如何使用Image.frombuffer()。
def open_svg_as_image(fn, width, height): for i in range(10): try: tmpfd, tmppath = tempfile.mkstemp(".png") tmpfile = os.fdopen(tmpfd,'w') file = StringIO.StringIO() svgsurface = cairo.SVGSurface (file, width, height) svgctx = cairo.Context(svgsurface) svg = rsvg.Handle(file=fn) svgwidth = svg.get_property('width') svgheight = svg.get_property('height') svgctx.scale(width/float(svgwidth),height/float(svgheight)) svg.render_cairo(svgctx) svgsurface.write_to_png(tmpfile) svgsurface.finish() tmpfile.close() tmpfile = open(tmppath, 'r') imgsurface = cairo.ImageSurface.create_from_png(tmpfile) imgwidth = imgsurface.get_width() imgheight = imgsurface.get_height() data = imgsurface.get_data() im = Image.frombuffer("RGBA",(imgwidth, imgheight), data ,"raw","RGBA",0,1) os.remove(tmppath) break except MemoryError: print 'Memory Error. Try again ...' continue else: raise Exception('Problem loading image {0}'.format(fn)) return im
def array2PIL(arr, size): mode = 'RGBA' arr = arr.reshape(arr.shape[0]*arr.shape[1], arr.shape[2]) if len(arr[0]) == 3: arr = numpy.c_[arr, 255*numpy.ones((len(arr),1), numpy.uint8)] return Image.frombuffer(mode, size, arr.tostring(), 'raw', mode, 0, 1)