NONE:
Always geometrically rescale the image to fit the page if necessary. Fast.
Otherwise, downscale the bitmap to match the dpi setting via the selected method before
adding it to the PDF if the calculated image DPI after stretching is greater than dpi.
Slower.
NEAREST:
Nearest-neighbor interpolation. Lowest quality. Produces blocky images, especially when
upsampling.
LINEAR:
Bi-linear interpolation. Better quality than nearest-neighbor, slower. Okay when the
target size is not too different from the source size.
CUBIC:
Bi-cubic interpolation. Better quality than bi-linear, slower. Produces high-quality
results in a larger range than that of bi-linear.
LANCZOS4:
Lanczos (Sinc) interpolation over 8x8 neighborhood. Produces very high quality results,
but slower than bi-cubic. Retains sharp edges like those of text when downsampling.
AREA:
Accurate, produces moire-free results, but tends to produce blurrier images. When
upsampling, it is similar to nearest-neighbor.
Resampling method.
NONE: Always geometrically rescale the image to fit the page if necessary. Fast.Otherwise, downscale the bitmap to match the
dpisetting via the selected method before adding it to the PDF if the calculated image DPI after stretching is greater thandpi. Slower.NEAREST: Nearest-neighbor interpolation. Lowest quality. Produces blocky images, especially when upsampling.LINEAR: Bi-linear interpolation. Better quality than nearest-neighbor, slower. Okay when the target size is not too different from the source size.CUBIC: Bi-cubic interpolation. Better quality than bi-linear, slower. Produces high-quality results in a larger range than that of bi-linear.LANCZOS4: Lanczos (Sinc) interpolation over 8x8 neighborhood. Produces very high quality results, but slower than bi-cubic. Retains sharp edges like those of text when downsampling.AREA: Accurate, produces moire-free results, but tends to produce blurrier images. When upsampling, it is similar to nearest-neighbor.