Python怎么将bmp格式的图片批量转成jpg
将bmp格式的图片批量转成jpg
# *_* coding : UTF-8 *_* # 开发人员: csu·pan-_-|| # 开发时间: 2020/11/21 12:40 # 文件名称: bmp_to_jpg.py # 开发工具: PyCharm # 功能描述: 将bmp格式的图片批量转成jpg import os import cv2 # 图片的路径 bmp_dir = r'E:\Projects\bmp' jpg_dir = r'E:\Projects\jpg' filelists = os.listdir(bmp_dir) for i,file in enumerate(filelists): # 读图,-1为不改变图片格式,0为灰度图 img = cv2.imread(os.path.join(bmp_dir,file),-1) newName = file.replace('.bmp','.jpg') cv2.imwrite(os.path.join(jpg_dir,newName),img) print('第%d张图:%s'%(i+1,newName))登录后复制
python图像格式转换(bmp、jpg、png)
bmp转png
import os from PIL import Image json_dir = r"D:\BMP2PNG" label_names = os.listdir(json_dir) label_dir = [] for filename in label_names: label_dir.append(os.path.join(json_dir,filename)) for i,filename in enumerate(label_dir): im = Image.open(filename) # open ppm file newname = label_names[i].split('.')[0] + '.png' # new name for png file im.save(os.path.join(json_dir,newname))登录后复制
bmp转jpg
import os from PIL import Image json_dir = r"D:\BMP2JPG" label_names = os.listdir(json_dir) label_dir = [] for filename in label_names: label_dir.append(os.path.join(json_dir,filename)) for i,filename in enumerate(label_dir): im = Image.open(filename) # open ppm file newname = label_names[i].split('.')[0] + '.jpg' # new name for png file im.save(os.path.join(json_dir,newname))登录后复制
遍历文件夹下包含子文件夹中的所有bmp转png
import os from PIL import Image import tqdm def bmp2png(file_dir): for root, dirs, files in os.walk(file_dir): # 获取所有文件 # for file in files: # 遍历所有文件名 for idx,file in enumerate(tqdm.tqdm(files)): if os.path.splitext(file)[1] == '.bmp': # 指定尾缀 ***重要*** im = Image.open(os.path.join(root, file)) # open img file newname = file.split('.')[0] + '.png' # new name for png file im.save(os.path.join(root, newname)) # 转为png bmp2png(r"D:\数据集\20221105-18")登录后复制
遍历文件夹下包含子文件夹中的所有bmp重命名为png
import os from PIL import Image import tqdm def bmp2png(file_dir): for root, dirs, files in os.walk(file_dir): # 获取所有文件 # for file in files: # 遍历所有文件名 for idx,file in enumerate(tqdm.tqdm(files)): if os.path.splitext(file)[1] == '.bmp': # 指定尾缀 ***重要*** newname = file.split('.')[0] + '.png' # new name for png file if(os.path.exists(os.path.join(root, newname))): os.remove(os.path.join(root, newname)) os.rename(os.path.join(root, file),os.path.join(root, newname)) print(os.path.join(root, file)) bmp2png(r"D:\PUCP数据集\20221105-18")登录后复制
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