def equalize(_id, n=0):
image = get_image(_id, n, pil=True)
if image:
image = ImgEnhance.equalize(image)
image = PIL_tobytes(image)
return Response(response=image, mimetype='image/jpeg')
return 'Sem imagem'
def contrast_cv2(_id, n=0):
image = get_image(_id, n, pil=True)
if image:
image = ImgEnhance.enhancedcontrast_cv2(image)
image = PIL_tobytes(image)
return Response(response=image, mimetype='image/jpeg')
return 'Sem imagem'
def colorize():
_id = request.args.get('_id')
n = request.args.get('n', 0)
alpha = request.args.get('alpha', '12')
beta = request.args.get('beta', '14')
equalize = request.args.get('equalize', False) == 'True'
image = get_image(_id, n, pil=True)
if image:
alpha = float(alpha) / 10.
beta = float(beta) / 10.
image = ImgEnhance.expand_tocolor(image,
alpha=alpha,
beta=beta,
equalize=equalize)
image = PIL_tobytes(image)
return Response(response=image, mimetype='image/jpeg')
return 'Sem imagem'
def img_contrast():
_id = request.args.get('_id')
n = request.args.get('n', 0)
cutoff = request.args.get('cutoff', '10')
equalize = request.args.get('equalize', False) == 'True'
colorize = request.args.get('colorize', False) == 'True'
cv2 = request.args.get('cv2', False) == 'True'
image = get_image(_id, n, pil=True)
if image:
cutoff = int(cutoff)
image = ImgEnhance.autocontrast(image,
cutoff=cutoff,
colorize=colorize,
equalize=equalize,
cv2=cv2)
image = PIL_tobytes(image)
return Response(response=image, mimetype='image/jpeg')
return 'Sem imagem'
def image_id(db, _id):
"""Recupera a imagem do banco e serializa para stream HTTP.
"""
image = mongo_image(db, _id)
try:
size = request.args.get('size')
if size:
width, height = map(int, size.split(','))
pil_img = Image.open(io.BytesIO(image))
pil_img.thumbnail((width, height))
image = PIL_tobytes(pil_img)
except Exception as err:
logger.error('Erro ao processar parâmetro size em /image: %s' %
str(err))
if image:
return Response(response=image, mimetype='image/jpeg')
return 'Sem Imagem'
def image_id(_id):
"""Recupera a imagem do banco e serializa para stream HTTP.
Estes métodos dispensam autenticação, pois é necessário ter um _id válido.
O padrão é retornar um bounding box desenhado.
Para evitar o bbox, passar ?bboxes=False na url
"""
db = app.config['mongodb']
bboxes = request.args.get('bboxes', 'True').lower() == 'true'
image = mongo_image(db, _id, bboxes=bboxes)
if image:
contrast, color = get_contrast_and_color_(request)
if contrast or color:
PILimage = bytes_toPIL(image)
if contrast:
PILimage = ImgEnhance.enhancedcontrast_cv2(PILimage)
if color:
PILimage = ImgEnhance.expand_tocolor(PILimage)
image = PIL_tobytes(PILimage)
return Response(response=image, mimetype='image/jpeg')
return 'Sem Imagem'