我正在使用 imagemagick convert 从单个 tif 文件中提取多个 tif 图像。但是当我使用以下命令时
convert image.tif single%d.tif
我得到的图像质量很差（有点模糊）。与原始 image.tif 文件中的图像质量相比，文件 等的质量非常差。然后我single1.tif尝试single2.tif
convert -enhance image.tif single%d.tif
但我输出的图像质量仍然很低。
我应该怎么做才能获得多个文件中分离出来的具有原始质量的图像？
附加输出在这里：
convert: image.tif: invalid TIFF directory; tags are not sorted in ascending order. `TIFFReadDirectory'.
convert: image.tif: unknown field with tag 37679 (0x932f) encountered. `TIFFReadDirectory'.
convert: image.tif: unknown field with tag 37680 (0x9330) encountered. `TIFFReadDirectory'.
convert: image.tif: unknown field with tag 37681 (0x9331) encountered. `TIFFReadDirectory'.
convert: Depreciated and troublesome old-style JPEG compression mode, please convert to new-style JPEG compression and notify vendor of writing software. `OJPEGSetupDecode'.
convert: image.tif: invalid TIFF directory; tags are not sorted in ascending order. `TIFFReadDirectory'.
convert: image.tif: unknown field with tag 37679 (0x932f) encountered. `TIFFReadDirectory'.
convert: image.tif: unknown field with tag 37681 (0x9331) encountered. `TIFFReadDirectory'.
convert: Depreciated and troublesome old-style JPEG compression mode, please convert to new-style JPEG compression and notify vendor of writing software. `OJPEGSetupDecode'.
convert: image.tif: invalid TIFF directory; tags are not sorted in ascending order. `TIFFReadDirectory'.
convert: image.tif: unknown field with tag 37679 (0x932f) encountered. `TIFFReadDirectory'.
convert: image.tif: unknown field with tag 37681 (0x9331) encountered. `TIFFReadDirectory'.
convert: Depreciated and troublesome old-style JPEG compression mode, please convert to new-style JPEG compression and notify vendor of writing software. `OJPEGSetupDecode'.
convert: image.tif: invalid TIFF directory; tags are not sorted in ascending order. `TIFFReadDirectory'.
convert: image.tif: unknown field with tag 37679 (0x932f) encountered. `TIFFReadDirectory'.
convert: image.tif: unknown field with tag 37681 (0x9331) encountered. `TIFFReadDirectory'.
convert: Depreciated and troublesome old-style JPEG compression mode, please convert to new-style JPEG compression and notify vendor of writing software. `OJPEGSetupDecode'.
convert: image.tif: invalid TIFF directory; tags are not sorted in ascending order. `TIFFReadDirectory'.
convert: image.tif: unknown field with tag 37679 (0x932f) encountered. `TIFFReadDirectory'.
convert: image.tif: unknown field with tag 37681 (0x9331) encountered. `TIFFReadDirectory'.
convert: Depreciated and troublesome old-style JPEG compression mode, please convert to new-style JPEG compression and notify vendor of writing software. `OJPEGSetupDecode'.
convert: image.tif: invalid TIFF directory; tags are not sorted in ascending order. `TIFFReadDirectory'.
convert: image.tif: unknown field with tag 37679 (0x932f) encountered. `TIFFReadDirectory'.
convert: image.tif: unknown field with tag 37681 (0x9331) encountered. `TIFFReadDirectory'.
convert: Depreciated and troublesome old-style JPEG compression mode, please convert to new-style JPEG compression and notify vendor of writing software. `OJPEGSetupDecode'.
convert: image.tif: invalid TIFF directory; tags are not sorted in ascending order. `TIFFReadDirectory'.
convert: image.tif: unknown field with tag 37679 (0x932f) encountered. `TIFFReadDirectory'.
convert: image.tif: unknown field with tag 37681 (0x9331) encountered. `TIFFReadDirectory'.
convert: Depreciated and troublesome old-style JPEG compression mode, please convert to new-style JPEG compression and notify vendor of writing software. `OJPEGSetupDecode'.
convert: image.tif: invalid TIFF directory; tags are not sorted in ascending order. `TIFFReadDirectory'.
convert: image.tif: unknown field with tag 37679 (0x932f) encountered. `TIFFReadDirectory'.
convert: image.tif: unknown field with tag 37681 (0x9331) encountered. `TIFFReadDirectory'.
convert: Depreciated and troublesome old-style JPEG compression mode, please convert to new-style JPEG compression and notify vendor of writing software. `OJPEGSetupDecode'.
答案1
您可以尝试转换为无损图像类型，而不是输出更多 TIFF 文件。据我所知，ImageMagick 会不惜一切代价避免重新压缩；但由于它发出警告，指出原始文件使用的是旧式压缩（Technote 2 之前的 TIFF Revision 6 JPEG），因此它可能还是会重新压缩它们，从而导致质量下降。
首先尝试无损格式；如果这没有帮助，您可能必须使用不同的库来提取帧。
convert image.tif single%d.png
或者
convert image.tif single%d.bmp