def _image_data(bin_id, target, mimetype):
b = get_object_or_404(Bin, pid=bin_id)
try:
arr = b.image(target)
except KeyError:
raise Http404("image data not found")
image_data = format_image(arr, mimetype)
return HttpResponse(image_data, content_type=mimetype)
def embed_image(image):
"""
Converts an IFCB formatted image array into a base64 encoded string that can be shown as an embedded
image in HTML
"""
image_data = format_image(image).getvalue()
return base64.b64encode(image_data).decode('ascii')
def add_image(self, bin, image_number):
"""add one image to the database"""
# collect values
time = bin.pid.timestamp
s = bin.schema
target = bin[image_number]
x = target[s.ROI_X]
y = target[s.ROI_Y]
xsiz = target[s.ROI_WIDTH]
ysiz = target[s.ROI_HEIGHT]
# convert image to ppm
image_array = bin.images[image_number]
image_ppm = format_image(image_array,
'image/x-portable-pixmap').getvalue()
# write to database
self._insert_row(bin.lid, image_number, time, x, y, xsiz, ysiz,
image_ppm)
def mosaic_page_image(request, bin_id):
arr = _mosaic_page_image(request, bin_id)
image_data = format_image(arr, 'image/png')
return HttpResponse(image_data, content_type='image/png')