byte[] read1bitImage(InputStream in) throws IOException {
if (fi.compression == FileInfo.LZW)
throw new IOException("ImageJ cannot open 1-bit LZW compressed TIFFs");
int scan = (int) Math.ceil(width / 8.0);
int len = scan * height;
byte[] buffer = new byte[len];
byte[] pixels = new byte[nPixels];
DataInputStream dis = new DataInputStream(in);
dis.readFully(buffer);
int value1, value2, offset, index;
for (int y = 0; y < height; y++) {
offset = y * scan;
index = y * width;
for (int x = 0; x < scan; x++) {
value1 = buffer[offset + x] & 0xff;
for (int i = 7; i >= 0; i--) {
value2 = (value1 & (1 << i)) != 0 ? 255 : 0;
if (index < pixels.length) pixels[index++] = (byte) value2;
}
}
}
return pixels;
}
