def check_annot(df, img_name):
    """
    return bool whether annotation available or not in df  
    """
    flag = []
    flag.append(img_name)
    #print(df.loc[df.FRAME == img_name]["FRAME"].values)
    #print(df.loc[df['FRAME'].isin(flag)])
    #print(df.loc[df['FRAME'].isin(flag)].shape[0])
    #print(df.loc[df['FRAME'].isin(flag)])
    return df.loc[df['FRAME'].isin(flag)].shape[0] != 0
    #df.loc[df.FRAME == img_name]["FRAME"].values == img_name