ImgResolver.py 文件源码

def tesseract(self, img):
        # keep the data
        fileName = "tmp_"+int(time.time()+random.randint(1,99999)).__str__()+".jpeg"
        while os.path.exists( fileName ):
            fileName = "tmp_"+int(time.time()+random.randint(1,99999)).__str__()+".jpeg"
        self.tmp_file = fileName
        with open(self.tmp_file, "w") as oFd:
            oFd.write(img)

        # resolve noise
        try:
            im = Image.open(self.tmp_file)
            enhancer = ImageEnhance.Color(im)
            im = enhancer.enhance(0.0)
            enhancer = ImageEnhance.Contrast(im)
            im = enhancer.enhance(3.0)
            enhancer = ImageEnhance.Brightness(im)
            im = enhancer.enhance(10.0)
            enhancer = ImageEnhance.Contrast(im)
            im = enhancer.enhance(20.0)
            enhancer = ImageEnhance.Sharpness(im)
            im = enhancer.enhance(0.0)
            im.save(self.tmp_file)
        except Exception as e:
            pass
        else:
            pass
        # use tesseract

        imgCode = os.popen("tesseract -l eng -psm 8 {} stdout 2>/dev/null"\
                .format(self.tmp_file)).readline()[0:-1]
        log.debug("Guess Ratio:{}/{}={}%".format(self.guess_hit+1, self.guess_total, \
                ((self.guess_hit+1)*100/(self.guess_total))))

        os.remove( self.tmp_file )


        return imgCode