BrightnessBarcode Class

Barcode Classes

class kalmus.barcodes.Barcode.BrightnessBarcode(color_metric, frame_type, sampled_frame_rate=1, skip_over=0, total_frames=10, barcode_type='Brightness')

Bases: kalmus.barcodes.Barcode.Barcode

Brightness Barcode Class.

Parameters

• color_metric (str) -- The metric for computing the color of the frame

• frame_type (str) -- The type of frame sampling

• sampled_frame_rate (int) -- Frame sample rate: the frame sampled from every sampled_frame_rate.

• skip_over (int) -- The number of frames to skip with at the beginning of the video

• total_frames (int) -- The total number of frames (computed) included in the barcode

• barcode_type (str) -- The type of the barcode

collect_brightness(video_path_name)

Collect the brightness from the input video

Parameters

video_path_name (str) -- The path to the video

multi_thread_collect_brightness(video_path_name, num_thread=4)

Collect the brightness of the input video using Multi-thread method

Parameters

• video_path_name (str) -- The path to the input video

• num_thread (int) -- Number of threads to collect the brightness

reshape_barcode(frames_per_column=160)

Reshape the brightness barcode (2 dimensional with 1 channel)

Parameters

frames_per_column (int) -- Number of frames per column in the reshaped barcode

thread_collect_brightness_start_to_end(video, start_point, num_frames, results, tid, frame_saved=None)

Collect the brightness from the video using the multi-threads

Parameters

• video (class:cv2.VideoCapture) -- The video object

• start_point (int) -- Start point for collecting the colors

• num_frames (int) -- The number of frames to collect

• results (list) -- The placeholder for saving the results

• tid (int) -- The id of the thread

• frame_saved (list) -- The placeholder for the saved frames