使用(py)twain扫描多个页面

Question

下面是我的代码：

import twain
for i in range(10):
    twain.acquire(str(i) + ".jpg", ds_name=b"B110,192.168.1.112 TWAIN",
                  dpi=200, pixel_type='gray', bpp=8, show_ui=False)

我假设每个acquire都对扫描仪进行扫描，但事实并非如此

如何使用pytwain扫描多个页面？

谢谢

Answer 1

def multiScan(self):
    """ Scan and return an array of PIL objects 
        If no images, will return an empty array
    """

    self.scanner.RequestAcquire(0, 1)
    images = []
    handles = []
    try:
        handle, more = self.scanner.XferImageNatively()
        handles.append(handle)
    except twain.excDSTransferCancelled:
        return []
    while more != 0:
        try:
            handle, more = self.scanner.XferImageNatively()
            handles.append(handle)
        except twain.excDSTransferCancelled:
            more = 0

    for handle in handles:
        images.append(Image.open(StringIO(twain.DIBToBMFile(handle))))
        twain.GlobalHandleFree(handle)

    return images

这就是我在我的包中做的事情：https://github.com/spacemudd/webagent-scanner/blob/master/pyScanLib/twainLib.py