python在内存中读取base64图片-skimage.io格式

深碍√TFBOYSˉ_ 2023-07-08 14:26 16阅读 0赞

import base64
    import skimage.io
    import matplotlib.pyplot as plt
    
    
    def base64_to_rgb(base64_str):
        """
        默认base64中的图像为rgb，直接转换成即可
        :param base64:
        :return:
        """
        if isinstance(base64_str, bytes):
            base64_str = base64_str.decode("utf-8")
    
        imgdata = base64.b64decode(base64_str)
        img = skimage.io.imread(imgdata, plugin='imageio')
        return img
    
    base = 'R0lGODlhdQAmAKIAAOYyL+rU4llg6Jmd8e92dCky4eEGAv///yH5BAAAAAAALAAAAAB1ACYAAAP/eLrc/jC2IEoZMATJu/9gyFVWIUyksIls677LUJbrEcxWDe98f+CWk4I0w/iOSNANKJQBC8mo9LEEDp8F3XR7rOIU2Cx3jHwKsUKyWqRhEEvGN3xN91BoCq8l9tTW/244Rk4mOkBGgIl8VjF+d4V5A5KKf3IWiCCEOZRraGxP`在这里插入代码片`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'
    
    img = base64_to_rgb(base)
    plt.imshow(img)
    plt.show()

# opencv格式 #

# coding: utf-8
    import base64
    import numpy as np
    import cv2
     
    img_file = open(r'00.JPG','rb')   # 二进制打开图片文件
    img_b64encode = base64.b64encode(img_file.read())  # base64编码
    img_file.close()  # 文件关闭
    img_b64decode = base64.b64decode(img_b64encode)  # base64解码
     
    img_array = np.fromstring(img_b64decode,np.uint8) # 转换np序列
    img=cv2.imdecode(img_array,cv2.COLOR_BGR2RGB)  # 转换Opencv格式
     
    cv2.imshow("img",img)
    cv2.waitKey()

# pIL格式 #

# coding: utf-8
    # python base64 编解码，转换成Opencv，PIL.Image图片格式
    import base64
    import io
    from PIL import Image
     
    img_file = open(r'/home/dcrmg/work/medi_ocr_v1.2/img/00.JPG','rb')   # 二进制打开图片文件
    img_b64encode = base64.b64encode(img_file.read())  # base64编码
    img_file.close()  # 文件关闭
    img_b64decode = base64.b64decode(img_b64encode)  # base64解码
     
    image = io.BytesIO(img_b64decode)
    img = Image.open(image)
    img.show()