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import cv2 |
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import os |
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import json |
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import streamlit as st |
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@st.cache |
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def get_images_list(path_to_folder: str) -> list: |
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"""Return the list of images from folder |
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Args: |
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path_to_folder (str): absolute or relative path to the folder with images |
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""" |
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image_names_list = [ |
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x for x in os.listdir(path_to_folder) if x[-3:] in ["jpg", "peg", "png"] |
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] |
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return image_names_list |
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@st.cache |
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def load_image( |
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image_name: str, path_to_folder: str = "../images", bgr2rgb: bool = True |
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): |
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"""Load the image |
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Args: |
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image_name (str): name of the image |
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path_to_folder (str): path to the folder with image |
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bgr2rgb (bool): converts BGR image to RGB if True |
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""" |
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path_to_image = os.path.join(path_to_folder, image_name) |
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image = cv2.imread(path_to_image) |
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if bgr2rgb: |
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image = cv2.cvtColor(image, cv2.COLOR_BGR2RGB) |
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return image |
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@st.cache |
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def load_augmentations_config( |
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placeholder_params: dict, path_to_config: str = "configs/augmentations.json" |
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) -> dict: |
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"""Load the json config with params of all transforms |
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Args: |
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placeholder_params (dict): dict with values of placeholders |
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path_to_config (str): path to the json config file |
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""" |
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with open(path_to_config, "r") as config_file: |
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augmentations = json.load(config_file) |
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for name, params in augmentations.items(): |
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params = [fill_placeholders(param, placeholder_params) for param in params] |
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return augmentations |
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def fill_placeholders(params: dict, placeholder_params: dict) -> dict: |
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"""Fill the placeholder values in the config file |
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Args: |
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params (dict): original params dict with placeholders |
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placeholder_params (dict): dict with values of placeholders |
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""" |
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if "placeholder" in params: |
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placeholder_dict = params["placeholder"] |
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for k, v in placeholder_dict.items(): |
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if isinstance(v, list): |
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params[k] = [] |
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for element in v: |
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if element in placeholder_params: |
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params[k].append(placeholder_params[element]) |
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else: |
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params[k].append(element) |
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else: |
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if v in placeholder_params: |
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params[k] = placeholder_params[v] |
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else: |
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params[k] = v |
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params.pop("placeholder") |
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return params |
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def get_params_string(param_values: dict) -> str: |
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"""Generate the string from the dict with parameters |
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Args: |
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param_values (dict): dict of "param_name" -> "param_value" |
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""" |
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params_string = ", ".join( |
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[k + "=" + str(param_values[k]) for k in param_values.keys()] |
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) |
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return params_string |
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