From 40af53b1d6bf6655bc01347e61c3e7d51bea3a5d Mon Sep 17 00:00:00 2001 From: Rajkiran Natarajan Date: Sat, 9 Mar 2019 15:48:21 -0500 Subject: [PATCH] issue-13921: Support setting compression setting for writing tiff images --- modules/imgcodecs/include/opencv2/imgcodecs.hpp | 7 ++++--- modules/imgcodecs/src/grfmt_tiff.cpp | 3 +-- 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/modules/imgcodecs/include/opencv2/imgcodecs.hpp b/modules/imgcodecs/include/opencv2/imgcodecs.hpp index 4e79518..ab75990 100644 --- a/modules/imgcodecs/include/opencv2/imgcodecs.hpp +++ b/modules/imgcodecs/include/opencv2/imgcodecs.hpp @@ -92,9 +92,10 @@ enum ImwriteFlags { IMWRITE_EXR_TYPE = (3 << 4) + 0, /* 48 */ //!< override EXR storage type (FLOAT (FP32) is default) IMWRITE_WEBP_QUALITY = 64, //!< For WEBP, it can be a quality from 1 to 100 (the higher is the better). By default (without any parameter) and for quality above 100 the lossless compression is used. IMWRITE_PAM_TUPLETYPE = 128,//!< For PAM, sets the TUPLETYPE field to the corresponding string value that is defined for the format - IMWRITE_TIFF_RESUNIT = 256,//!< For TIFF, use to specify which DPI resolution unit to set; see libtiff documentation for valid values - IMWRITE_TIFF_XDPI = 257,//!< For TIFF, use to specify the X direction DPI - IMWRITE_TIFF_YDPI = 258 //!< For TIFF, use to specify the Y direction DPI + IMWRITE_TIFF_RESUNIT = 256,//!< For TIFF, use to specify which DPI resolution unit to set; see libtiff documentation for valid values. + IMWRITE_TIFF_XDPI = 257,//!< For TIFF, use to specify the X direction DPI. + IMWRITE_TIFF_YDPI = 258, //!< For TIFF, use to specify the Y direction DPI. + IMWRITE_TIFF_COMPRESSION = 259 //!< For TIFF, use to specify the image compression scheme. See libtiff for integer constants corresponding to compression formats. Note, for images whose depth is CV_32F, only libtiff's SGILOG compression scheme is used. For other supported depths, the compression scheme can be specified by this flag; LZW compression is the default. }; enum ImwriteEXRTypeFlags { diff --git a/modules/imgcodecs/src/grfmt_tiff.cpp b/modules/imgcodecs/src/grfmt_tiff.cpp index b83ab10..40295df 100644 --- a/modules/imgcodecs/src/grfmt_tiff.cpp +++ b/modules/imgcodecs/src/grfmt_tiff.cpp @@ -750,12 +750,11 @@ bool TiffEncoder::writeLibTiff( const std::vector& img_vec, const std::vect } //Settings that matter to all images - // defaults for now, maybe base them on params in the future int compression = COMPRESSION_LZW; int predictor = PREDICTOR_HORIZONTAL; int resUnit = -1, dpiX = -1, dpiY = -1; - readParam(params, TIFFTAG_COMPRESSION, compression); + readParam(params, IMWRITE_TIFF_COMPRESSION, compression); readParam(params, TIFFTAG_PREDICTOR, predictor); readParam(params, IMWRITE_TIFF_RESUNIT, resUnit); readParam(params, IMWRITE_TIFF_XDPI, dpiX); -- 2.7.4