DePdfToPng.py 文件源码

def UnHidePdfintoPng(img,x,y):
    counterx = 0
    countery = 0
    h , w , c = img.shape
    data = []
    while counterx <= x:
        temp1 = (img[counterx][countery][0] & 0x03) << 6;
        temp2 = (img[counterx][countery][ 1]  & 0x03) << 4
        temp3 = (img[counterx][countery ][2]  & 0x03) << 2
        temp4 = (img[counterx][countery ][3]  & 0x03)
        data.append(temp1 | temp2 | temp3 | temp4)
        if counterx == x and countery == y:
            #print ('EOF Found')
            break
        if(countery == w - 1):
            countery = 0
            counterx += 1
        else:
            countery += 1
    data = np.int8(data)
    return data