Python numpy.copyto方法代码示例

# 需要导入模块: import numpy [as 别名]
# 或者: from numpy import copyto [as 别名]
def save_image(data, epoch, image_size, batch_size, output_dir, padding=2):
    """ save image """
    data = data.asnumpy().transpose((0, 2, 3, 1))
    datanp = np.clip(
        (data - np.min(data))*(255.0/(np.max(data) - np.min(data))), 0, 255).astype(np.uint8)
    x_dim = min(8, batch_size)
    y_dim = int(math.ceil(float(batch_size) / x_dim))
    height, width = int(image_size + padding), int(image_size + padding)
    grid = np.zeros((height * y_dim + 1 + padding // 2, width *
                     x_dim + 1 + padding // 2, 3), dtype=np.uint8)
    k = 0
    for y in range(y_dim):
        for x in range(x_dim):
            if k >= batch_size:
                break
            start_y = y * height + 1 + padding // 2
            end_y = start_y + height - padding
            start_x = x * width + 1 + padding // 2
            end_x = start_x + width - padding
            np.copyto(grid[start_y:end_y, start_x:end_x, :], datanp[k])
            k += 1
    imageio.imwrite(
        '{}/fake_samples_epoch_{}.png'.format(output_dir, epoch), grid) 

# 需要导入模块: import numpy [as 别名]
# 或者: from numpy import copyto [as 别名]
def draw_keypoints_on_image_array(image,
                                  keypoints,
                                  color='red',
                                  radius=2,
                                  use_normalized_coordinates=True):
  """Draws keypoints on an image (numpy array).

  Args:
    image: a numpy array with shape [height, width, 3].
    keypoints: a numpy array with shape [num_keypoints, 2].
    color: color to draw the keypoints with. Default is red.
    radius: keypoint radius. Default value is 2.
    use_normalized_coordinates: if True (default), treat keypoint values as
      relative to the image.  Otherwise treat them as absolute.
  """
  image_pil = Image.fromarray(np.uint8(image)).convert('RGB')
  draw_keypoints_on_image(image_pil, keypoints, color, radius,
                          use_normalized_coordinates)
  np.copyto(image, np.array(image_pil)) 

# 需要导入模块: import numpy [as 别名]
# 或者: from numpy import copyto [as 别名]
def shuffle_lr(parts, num_landmarks=68, pairs=None):
    if num_landmarks == 68:
        if pairs is None:
            pairs = [[0, 16], [1, 15], [2, 14], [3, 13], [4, 12], [5, 11], [6, 10],
                    [7, 9], [17, 26], [18, 25], [19, 24], [20, 23], [21, 22], [36, 45],
                    [37, 44], [38, 43], [39, 42], [41, 46], [40, 47], [31, 35], [32, 34],
                    [50, 52], [49, 53], [48, 54], [61, 63], [60, 64], [67, 65], [59, 55], [58, 56]]
    elif num_landmarks == 98:
        if pairs is None:
            pairs = [[0, 32], [1,31], [2, 30], [3, 29], [4, 28], [5, 27], [6, 26], [7, 25], [8, 24], [9, 23], [10, 22], [11, 21], [12, 20], [13, 19], [14, 18], [15, 17], [33, 46], [34, 45], [35, 44], [36, 43], [37, 42], [38, 50], [39, 49], [40, 48], [41, 47], [60, 72], [61, 71], [62, 70], [63, 69], [64, 68], [65, 75], [66, 74], [67, 73], [96, 97], [55, 59], [56, 58], [76, 82], [77, 81], [78, 80], [88, 92], [89, 91], [95, 93], [87, 83], [86, 84]]
    elif num_landmarks == 19:
        if pairs is None:
            pairs = [[0, 5], [1, 4], [2, 3], [6, 11], [7, 10], [8, 9], [12, 14], [15, 17]]
    elif num_landmarks == 29:
        if pairs is None:
            pairs = [[0, 1], [4, 6], [5, 7], [2, 3], [8, 9], [12, 14], [16, 17], [13, 15], [10, 11], [18, 19], [22, 23]]
    for matched_p in pairs:
        idx1, idx2 = matched_p[0], matched_p[1]
        tmp = np.copy(parts[idx1])
        np.copyto(parts[idx1], parts[idx2])
        np.copyto(parts[idx2], tmp)
    return parts 

# 需要导入模块: import numpy [as 别名]
# 或者: from numpy import copyto [as 别名]
def prediction(self, img):
        img_resized = _preprocess_trt(img, self.input_shape)
        np.copyto(self.host_inputs[0], img_resized.ravel())

        cuda.memcpy_htod_async(
            self.cuda_inputs[0], self.host_inputs[0], self.stream)
        self.context.execute_async(
            batch_size=1,
            bindings=self.bindings,
            stream_handle=self.stream.handle)
        cuda.memcpy_dtoh_async(
            self.host_outputs[1], self.cuda_outputs[1], self.stream)
        cuda.memcpy_dtoh_async(
            self.host_outputs[0], self.cuda_outputs[0], self.stream)
        self.stream.synchronize()

        output = self.host_outputs[0]
        return output 

# 需要导入模块: import numpy [as 别名]
# 或者: from numpy import copyto [as 别名]
def draw_bounding_boxes_on_image_array(image,
                                       boxes,
                                       color='red',
                                       thickness=4,
                                       display_str_list_list=()):
  """Draws bounding boxes on image (numpy array).

  Args:
    image: a numpy array object.
    boxes: a 2 dimensional numpy array of [N, 4]: (ymin, xmin, ymax, xmax).
           The coordinates are in normalized format between [0, 1].
    color: color to draw bounding box. Default is red.
    thickness: line thickness. Default value is 4.
    display_str_list_list: list of list of strings.
                           a list of strings for each bounding box.
                           The reason to pass a list of strings for a
                           bounding box is that it might contain
                           multiple labels.

  Raises:
    ValueError: if boxes is not a [N, 4] array
  """
  image_pil = Image.fromarray(image)
  draw_bounding_boxes_on_image(image_pil, boxes, color, thickness, display_str_list_list)
  np.copyto(image, np.array(image_pil)) 

# 需要导入模块: import numpy [as 别名]
# 或者: from numpy import copyto [as 别名]
def _write_to_command_buffer(self, to_write):
        """Write input to the command buffer.

        Reformat input string to the correct format.

        Args:
            to_write (:class:`str`): The string to write to the command buffer.

        """
        np.copyto(self._command_bool_ptr, True)
        to_write += '0'  # The gason JSON parser in holodeck expects a 0 at the end of the file.
        input_bytes = str.encode(to_write)
        if len(input_bytes) > self.max_buffer:
            raise HolodeckException("Error: Command length exceeds buffer size")
        for index, val in enumerate(input_bytes):
            self._command_buffer_ptr[index] = val 

# 需要导入模块: import numpy [as 别名]
# 或者: from numpy import copyto [as 别名]
def teleport(self, location=None, rotation=None):
        """Teleports the agent to a specific location, with a specific rotation.

        Args:
            location (np.ndarray, optional): An array with three elements specifying the target
                world coordinates ``[x, y, z]`` in meters (see :ref:`coordinate-system`).
                
                If ``None`` (default), keeps the current location.
            rotation (np.ndarray, optional): An array with three elements specifying roll, pitch,
                and yaw in degrees of the agent.
                
                If ``None`` (default), keeps the current rotation.

        """
        val = 0
        if location is not None:
            val += 1
            np.copyto(self._teleport_buffer[0:3], location)
        if rotation is not None:
            np.copyto(self._teleport_buffer[3:6], rotation)
            val += 2
        self._teleport_type_buffer[0] = val 

# 需要导入模块: import numpy [as 别名]
# 或者: from numpy import copyto [as 别名]
def set_physics_state(self, location, rotation, velocity, angular_velocity):
        """Sets the location, rotation, velocity and angular velocity of an agent.

        Args:
            location (np.ndarray): New location (``[x, y, z]`` (see :ref:`coordinate-system`))
            rotation (np.ndarray): New rotation (``[roll, pitch, yaw]``, see (see :ref:`rotations`))
            velocity (np.ndarray): New velocity (``[x, y, z]`` (see :ref:`coordinate-system`))
            angular_velocity (np.ndarray): New angular velocity (``[x, y, z]`` in **degrees** 
                (see :ref:`coordinate-system`))

        """
        np.copyto(self._teleport_buffer[0:3], location)
        np.copyto(self._teleport_buffer[3:6], rotation)
        np.copyto(self._teleport_buffer[6:9], velocity)
        np.copyto(self._teleport_buffer[9:12], angular_velocity)
        self._teleport_type_buffer[0] = 15 

# 需要导入模块: import numpy [as 别名]
# 或者: from numpy import copyto [as 别名]
def paint_drape(self, character, curtain):
    """Fill a masked area on the "canvas" of this renderer.

    Places `character` into all non-False locations in the binary mask
    `curtain`. This is the usual means by which a `Drape` is added to an
    observation.

    Args:
      character: a string of length 1 containing an ASCII character.
      curtain: a 2-D `np.bool_` array whose dimensions are the same as this
          renderer's.

    Raises:
      ValueError: `character` is not a valid character for this game, according
          to the `Engine`'s configuration.
    """
    if character not in self._layers:
      raise ValueError('character {} does not seem to be a valid character for '
                       'this game'.format(str(character)))
    self._board[curtain] = ord(character)
    np.copyto(self._layers[character], curtain) 

# 需要导入模块: import numpy [as 别名]
# 或者: from numpy import copyto [as 别名]
def draw_bounding_box_on_image_array(image,
                                     ymin,
                                     xmin,
                                     ymax,
                                     xmax,
                                     color='red',
                                     thickness=4,
                                     display_str_list=(),
                                     use_normalized_coordinates=True):
  """Adds a bounding box to an image (numpy array).

  Args:
    image: a numpy array with shape [height, width, 3].
    ymin: ymin of bounding box in normalized coordinates (same below).
    xmin: xmin of bounding box.
    ymax: ymax of bounding box.
    xmax: xmax of bounding box.
    color: color to draw bounding box. Default is red.
    thickness: line thickness. Default value is 4.
    display_str_list: list of strings to display in box
                      (each to be shown on its own line).
    use_normalized_coordinates: If True (default), treat coordinates
      ymin, xmin, ymax, xmax as relative to the image.  Otherwise treat
      coordinates as absolute.
  """
  image_pil = Image.fromarray(np.uint8(image)).convert('RGB')
  draw_bounding_box_on_image(image_pil, ymin, xmin, ymax, xmax, color,
                             thickness, display_str_list,
                             use_normalized_coordinates)
  np.copyto(image, np.array(image_pil)) 

# 需要导入模块: import numpy [as 别名]
# 或者: from numpy import copyto [as 别名]
def draw_bounding_boxes_on_image_array(image,
                                       boxes,
                                       color='red',
                                       thickness=4,
                                       display_str_list_list=()):
  """Draws bounding boxes on image (numpy array).

  Args:
    image: a numpy array object.
    boxes: a 2 dimensional numpy array of [N, 4]: (ymin, xmin, ymax, xmax).
           The coordinates are in normalized format between [0, 1].
    color: color to draw bounding box. Default is red.
    thickness: line thickness. Default value is 4.
    display_str_list_list: list of list of strings.
                           a list of strings for each bounding box.
                           The reason to pass a list of strings for a
                           bounding box is that it might contain
                           multiple labels.

  Raises:
    ValueError: if boxes is not a [N, 4] array
  """
  image_pil = Image.fromarray(image)
  draw_bounding_boxes_on_image(image_pil, boxes, color, thickness,
                               display_str_list_list)
  np.copyto(image, np.array(image_pil)) 

# 需要导入模块: import numpy [as 别名]
# 或者: from numpy import copyto [as 别名]
def draw_mask_on_image_array(image, mask, color='red', alpha=0.7):
  """Draws mask on an image.

  Args:
    image: uint8 numpy array with shape (img_height, img_height, 3)
    mask: a float numpy array of shape (img_height, img_height) with
      values between 0 and 1
    color: color to draw the keypoints with. Default is red.
    alpha: transparency value between 0 and 1. (default: 0.7)

  Raises:
    ValueError: On incorrect data type for image or masks.
  """
  if image.dtype != np.uint8:
    raise ValueError('`image` not of type np.uint8')
  if mask.dtype != np.float32:
    raise ValueError('`mask` not of type np.float32')
  if np.any(np.logical_or(mask > 1.0, mask < 0.0)):
    raise ValueError('`mask` elements should be in [0, 1]')
  rgb = ImageColor.getrgb(color)
  pil_image = Image.fromarray(image)

  solid_color = np.expand_dims(
      np.ones_like(mask), axis=2) * np.reshape(list(rgb), [1, 1, 3])
  pil_solid_color = Image.fromarray(np.uint8(solid_color)).convert('RGBA')
  pil_mask = Image.fromarray(np.uint8(255.0*alpha*mask)).convert('L')
  pil_image = Image.composite(pil_solid_color, pil_image, pil_mask)
  np.copyto(image, np.array(pil_image.convert('RGB'))) 

# 需要导入模块: import numpy [as 别名]
# 或者: from numpy import copyto [as 别名]
def _subproc_worker(pipe, parent_pipe, env_fn_wrapper, obs_bufs, obs_shapes, obs_dtypes, keys):
    """
    Control a single environment instance using IPC and
    shared memory.
    """
    def _write_obs(maybe_dict_obs):
        flatdict = obs_to_dict(maybe_dict_obs)
        for k in keys:
            dst = obs_bufs[k].get_obj()
            dst_np = np.frombuffer(dst, dtype=obs_dtypes[k]).reshape(obs_shapes[k])  # pylint: disable=W0212
            np.copyto(dst_np, flatdict[k])

    env = env_fn_wrapper.x()
    parent_pipe.close()
    try:
        while True:
            cmd, data = pipe.recv()
            if cmd == 'reset':
                pipe.send(_write_obs(env.reset()))
            elif cmd == 'step':
                obs, reward, done, info = env.step(data)
                if done:
                    obs = env.reset()
                pipe.send((_write_obs(obs), reward, done, info))
            elif cmd == 'render':
                pipe.send(env.render(mode='rgb_array'))
            elif cmd == 'close':
                pipe.send(None)
                break
            else:
                raise RuntimeError('Got unrecognized cmd %s' % cmd)
    except KeyboardInterrupt:
        print('ShmemVecEnv worker: got KeyboardInterrupt')
    finally:
        env.close() 

# 需要导入模块: import numpy [as 别名]
# 或者: from numpy import copyto [as 别名]
def load_normalized_test_case(data_path, pagelocked_buffer, mean, case_num=randint(0, 9)):
    test_case_path = os.path.join(data_path, str(case_num) + ".pgm")
    # Flatten the image into a 1D array, normalize, and copy to pagelocked memory.
    img = np.array(Image.open(test_case_path)).ravel()
    np.copyto(pagelocked_buffer, img - mean)
    return case_num 

# 需要导入模块: import numpy [as 别名]
# 或者: from numpy import copyto [as 别名]
def load_normalized_test_case(data_path, pagelocked_buffer, case_num=randint(0, 9)):
    test_case_path = os.path.join(data_path, str(case_num) + ".pgm")
    # Flatten the image into a 1D array, normalize, and copy to pagelocked memory.
    img = np.array(Image.open(test_case_path)).ravel()
    np.copyto(pagelocked_buffer, 1.0 - img / 255.0)
    return case_num