Enable CUDA_NVCC_FLAGS at arch detect step.

Drop code under *undefined* HAVE_TIFF
(violates several policies, like a way to turn off tiff support)

Added gradiantSize param into goodFeaturesToTrack API (#9618)

* Added gradiantSize param into goodFeaturesToTrack API

Removed hardcode value 3 in goodFeaturesToTrack API, and
added new param 'gradinatSize' in this API so that user can
pass any gradiant size as 3, 5 or 7.
Signed-off-by: Vipin Anand <anand.vipin@gmail.com>
Signed-off-by: Nilaykumar Patel<nilay.nilpat@gmail.com>
Signed-off-by: Prashanth Voora <prashanthx85@gmail.com>

* fixed compilation error for java test
Signed-off-by: Vipin Anand <anand.vipin@gmail.com>

* Modifying code for previous binary compatibility and fixing other warnings

fixed ABI break issue

resolved merged conflict

compilation error fix
Signed-off-by: Vipin Anand <anand.vipin@gmail.com>
Signed-off-by: Patel, Nilaykumar K <nilay.nilpat@gmail.com>

Update planar_tracking.cpp (#9686)

Update OpenCVDownload.cmake unpack option

Fix 'directory does not exist' in windows tutorial

Added new "f" flag to the tar unpack, because without it doesn't complete, an compile fails

* lab_tetra squashed

* initial version is almost written

* unfinished work

* compilation fixed, to be debugged

* Lab test removed

* more fixes

* Luv2RGBinteger: channels order fixed

* Lab structs removed

* good trilinear interpolation added

* several fixes

* removed Luv2RGB interpolations, XYZ tables; 8-cell LUT added

* no_interpolate made 8-cell

* interpolations rewritten to 8-cell, minor fixes

* packed interpolation added for RGB2Luv

* tetra implemented

* removing unnecessary code

* LUT building merged

* changes ported to color.cpp

* minor fixes; try to suppress warnings

* fixed v range of Luv

* fixed incorrect src channel number

* minor fixes

* preliminary version of Luv2RGBinteger is done

* Luv2RGB_b is in progress

* XYZ color constants converted to softfloat

* Luv test: precision fixed

* Luv bit-exactness test added

* warnings fixed

* compilation fixed, error message fixed

* Luv check is limited to [0-2,0-2,0-2] by XYZ

* L->Y generation moved to LUT

* LUTs added for up and vp of Luv2RGB_b

* still works

* fixed-point is done, works at maxerr 2

* vectorized code is done, 2x slower than original

* perf improved by 10%

* extra comments removed

* code moved to color.cpp

* test_lab.cpp updated

* minor refactoring

* test added for Luv2RGB

* OCL Luv2RGB_b: XYZ are limited to [0, 2]; docs updated

* Luv2RGB_b rewritten to universal intrinsics

* test_lab.cpp moved to luv_tetra branch

clang pretends to be gcc 4.2.0 which means we will
use inline asm for no reason, instead of builtins
on clang when possible.
Signed-off-by: Khem Raj <raj.khem@gmail.com>

* Using environment variable to store options parsed by av_dict_parse_string(ENV{OPENCV_FFMPEG_CAPTURE_OPTIONS}, ";", "|")

* Adding missing mandatory flags parameter

* Guarding against missing function via LIBAVUTIL version

* Code review fixes

Copy/paste error due to coder mistake reverted
Proper version checking for LIBAVUTIL_BUILD

Prevents 10000x1 => 10000x8 transformation after getContinuousSize() call