可以看到700M的图片可以压缩到只有9M，并且模型推理精度只会下降0.07.有很多种压缩方式，经过大量实验qb36是最好的，默认使用这个。
@input_images：原始图片。
@mkv_files\qb36：中转文件，也就是说原始图片要先转换为.mkv文件，然后继而转换为被压缩后的图片。
@output_images:不用多说，压缩后的图片。
NOTE:只需安装ffmpeg。
👑核心代码：
import os
import glob
from tqdm import tqdmclass x265_encode_decode_Tool(object):def __init__(self, quality, mkv_path, input_img_path, output_img_path) -> None:self.quality = qualityself.mkv_path = mkv_pathself.input_img_path = input_img_pathself.output_img_path = output_img_pathself.mkvFile = ""if not os.path.exists(self.mkv_path):os.makedirs(self.mkv_path)if not os.path.exists(self.output_img_path):os.makedirs(self.output_img_path)def run_x265_encode(self):label_list=os.listdir(self.input_img_path)for label in tqdm(label_list): #xxx.jpg'''jpg to mkv with qpxx'''os.chdir(self.input_img_path) # .../JPEGImages/cmd_jpg_to_mkv="ffmpeg -i " + label + " -c:v libx265 -x265-params qp="\+ self.quality[2:] + " "+ self.mkv_path + "/"+\label[:len(label)-4]+".mkv"# print(cmd_jpg_to_mkv)os.system(cmd_jpg_to_mkv)def run_x265_decode(self):# '''# mkv to jpg# '''label_list=os.listdir(self.input_img_path)for label in tqdm(label_list): #xxx.jpgos.chdir(self.mkv_path + "/" + self.mkvFile) #.../x265_VOC2007/cmd_mkv_to_jpg = "ffmpeg -i "+label[:len(label)-4]+".mkv -r 1 \-f image2 "+ self.output_img_path + "/" + self.mkvFile + "/" + label# print(cmd_mkv_to_jpg)os.system(cmd_mkv_to_jpg)def run_x265_encode_and_decode(self):label_list=os.listdir(self.input_img_path)for label in tqdm(label_list): #xxx.jpg'''jpg to mkv with qpxx'''os.chdir(self.input_img_path) # .../JPEGImages/cmd_jpg_to_mkv="ffmpeg -i " + label + " -c:v libx265 -x265-params qp="\+ self.quality[2:] + " "+ self.mkv_path + "/"+\label[:len(label)-4]+".mkv"# print(cmd_jpg_to_mkv)os.system(cmd_jpg_to_mkv)# '''# mkv to jpg# '''os.chdir(self.mkv_path + "/" + self.mkvFile) #.../x265_VOC2007/cmd_mkv_to_jpg = "ffmpeg -i "+label[:len(label)-4]+".mkv -r 1 \-f image2 "+ self.output_img_path + "/" + self.mkvFile + "/" + label# print(cmd_mkv_to_jpg)os.system(cmd_mkv_to_jpg)
👑调用接口：
from x265_encode_and_decode import x265_encode_decode_Toolif __name__ == "__main__":quality = 'qb36'mkv_path = '/data2/personal/jiangziliang/projects/x265_imageCompressor/mkv_files/%s' % qualityinput_img_path = r'/data2/personal/jiangziliang/projects/x265_imageCompressor/input_images'output_img_path = r'/data2/personal/jiangziliang/projects/x265_imageCompressor/output_images'x265Tools = x265_encode_decode_Tool(quality, mkv_path, input_img_path, output_img_path)'''jpeg -> mkv'''# x265Tools.run_x265_encode()'''mkv -> jpeg'''# x265Tools.run_x265_decode()'''jpeg -> mkv -> jpeg'''# x265Tools.run_x265_encode_and_decode()
