kivy and opencv android

[Degenerate Tech]

i have found this code working in android .but camera image is lagging .i think numpy operations taking huge time .is there any way to make it faster ?

from kivy.app import App

from kivy.uix.boxlayout import BoxLayout

from kivy.graphics.texture import Texture

from kivy.uix.camera import Camera

from kivy.lang import Builder

import numpy as np

import cv2

import logging

Builder.load_file("myapplayout.kv")

class AndroidCamera(Camera):

    camera_resolution = (640, 480)

    counter = 0

    def _camera_loaded(self, *largs):

        self.texture = Texture.create(size=np.flip(self.camera_resolution), colorfmt='rgb')

        self.texture_size = list(self.texture.size)

    def on_tex(self, *l):

        if self._camera._buffer is None:

            return None

        logging.info("######### H1")

        frame = self.frame_from_buf()

        logging.info("######### H2")

        self.frame_to_screen(frame)

        logging.info("######### H3")

        super(AndroidCamera, self).on_tex(*l)

        logging.info("######### H4")

    def frame_from_buf(self):

        w, h = self.resolution

        frame = np.frombuffer(self._camera._buffer.tostring(), 'uint8').reshape((h + h // 2, w))

        frame_bgr = cv2.cvtColor(frame, 93)

        return np.rot90(frame_bgr, 3)

    def frame_to_screen(self, frame):

        frame_rgb = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)

        cv2.putText(frame_rgb, str(self.counter), (20, 50), cv2.FONT_HERSHEY_SIMPLEX, 1, (0, 255, 0), 2, cv2.LINE_AA)

        self.counter += 1

        flipped = np.flip(frame_rgb, 0)

        buf = flipped.tostring()

        self.texture.blit_buffer(buf, colorfmt='rgb', bufferfmt='ubyte')

class MyLayout(BoxLayout):

    pass

class MyApp(App):

    def build(self):

        return MyLayout()

if __name__ == '__main__':

    MyApp().run()

[Robert]

Use Xcamera.