* cmake: fix -fPIC/-fPIE handling in precompiled headers (PCH)

* Added fallback to generic linear resize in case bit-exact resize of provided matrix isn't supported

* samples: check for valid input in gpu/super_resolution.cpp

* Replaced incorrect CV_Assert calls with CV_Error

* ml: simplify interfaces of SimulatedAnnealingSolver

* add one more convolution kernel tuning candidate

Signed-off-by: Li Peng <peng.li@intel.com>

* Reverted calls to linear resize back to generic version for floating point matrices

* TensorFlow weights dequantization

* ml(ANN_MLP): ensure that train() call is always successful

* OpenCV version++

3.4.0

* build: fix MSVS2010 build error

* Optimize OpenCL BackgroundSubstractionMOG2

* Add basic plumbing for AVX512 support

The opencv infrastructure mostly has the basics for supporting avx512 math functions,
but it wasn't hooked up (likely due to lack of users)

In order to compile the DNN functions for AVX512, a few things need to be hooked up
and this patch does that

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>

* JS examples - FFT didn't work for non-square images because rows/cols were switched, Histogram example misspelled point

* opencl/cvtclr_dx: fix not compile-time constants issue.

fix the "initializing global variables with values that are not
compile-time constants" issue in Intel SDK for OpenCL. The root cause
is when initializing global variables with value, the variable need is
compile-time constants.

Thanks Zheng, Yang <yang.zheng@intel.com>,
Chodor, Jaroslaw <jaroslaw.chodor@intel.com> give a help.

Signed-off-by: Liu,Kaixuan <kaixuan.liu@intel.com>
Signed-off-by: Jun Zhao <jun.zhao@intel.com>

* dnn(ocl4dnn): update pre-tuned kernel config

Signed-off-by: Li Peng <peng.li@intel.com>

* Limit Concat layer optimization

* Provide a few AVX512 optimized functions for the DNN module

This patch adds AVX512 optimized fastConv as well as the hookups
needed to get these called in the convolution_layer.

AVX512 fastConv is code-identical on a C level to the AVX2 one,
but is measurably faster due to AVX512 having more registers available
to cache results in.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>

* Fix functions‘ class attribution error

* Use class' method to set attribute value

* Parallelization of BackgroundSubtractorKNN

* Fixed opencv#10433

* ts(feature): add "--test_threads=<N>" command-line option

* dnn(test): avoid calling of cv::setNumThreads() in tests directly

It is not necessary by default.
Also it breaks test system command-line parameters: --perf_threads / --test_threads

* imgcodecs(png): resolve ASAN issue with vars scope and setjmp() call

* Changed VA device in MediaSDK session initialization

* Add ocl version FasterRCNN accuracy test

Signed-off-by: Li Peng <peng.li@intel.com>

* Allocate new memory for optimized concat to prevent collisions.
Add a flag to disable memory reusing in dnn module.

* Merge pull request opencv#10232 from TomBecker-BD:hough-many-circles

Hough many circles (opencv#10232)

* Add Hui's optimization. Merge with latest changes in OpenCV.

* Use conditional compilation instead of a runtime flag.

* Whitespace.

* Create the sequence for the nonzero edge pixels only if using that approach.

* Improve performance for finding very large numbers of circles

* Return the circles with the larger accumulator values first, as per API documentation.
Use a separate step to check distance between circles. Allows circles to be sorted by strength first. Avoids locking in EstimateRadius which was slowing it down.
Return centers only if maxRadius == 0 as per API documentation.

* Sort the circles so results are deterministic. Otherwise the order of circles with the same strength depends on parallel processing completion order.

* Add test for HoughCircles.

* Add beads test.

* Wrap the non-zero points structure in a common interface so the code can use either a vector or a matrix.

* Remove the special case for skipping the radius search if maxRadius==0.

* Add performance tests.

* Use NULL instead of nullptr.
OpenCV should compile with C++98 compiler.

* Put test suite name first.
Use different test suite names for each test to avoid an error from the test runner.

* Address build bot errors and warnings.

* Skip radius search if maxRadius < 0.

* Dynamically switch to NZPointList when it will be faster than NZPointSet.

* Fix compile error: missing 'typename' prior to dependent type name.

* Fix compile error: missing 'typename' prior to dependent type name.
This time fix it the non C++ 11 way.

* Fix compile error: no type named 'const_reference' in 'class cv::NZPointList'

* Disable ManySmallCircles tests. Failing on Mac.

* Change beads image to JPEG for smaller file size.
Try enabling the ManySmallCircles tests again.

* Remove ManySmallCircles tests. They are failing on the Mac build.

* Fix expectations to check all circles.

* Changing case on a case-insensitive file system
Step 1: remove the old file names

* Changing case on a case-insensitive file system
Step 2: add them back with the new names

* Fix cmpAccum function to be strictly weak ordered.

* Add tests for many small circles.

* imgproc(perf): fix HoughCircles tests

* imgproc(houghCircles): refactor code

- simplify NZPointList
- drop broken (de-synchronization of 'current'/'mi' fields) NZPointSet iterator
- NZPointSet iterator is replaced to direct area scan
- use SIMD intrinsics
- avoid std exceptions (build for embedded systems)

* Merge pull request opencv#10352 from vinay0410:write_pbm

* added write as pbm

* add tests for pbm

* imgcodecs: PBM support

- drop additional PBM parameters
- write: fix P1/P4 mode (no maxval 255 value after width/height)
- write: invert values for P1/P4
- write: P1: compact ASCII mode (no spaces)
- simplify pbm test
- drop .pxm extension (http://netpbm.sourceforge.net/doc/ doesn't know such extension)

* cmake: AVX512 -> AVX_512F

* cmake(opt): AVX512_SKX

* Updating rotcalipers.cpp to resolve issue opencv#10096

Updating the documentation of the rotcalipers.cpp to resolve issue opencv#10096

* Merge pull request opencv#10469 from victor-ludorum:stichingbranch

Updating stiching.cpp to resolve new line issue opencv#10461 (opencv#10469)

* cmake: avoid timestamp change of version_string.inc file

* video: clean up bg subtraction tutorial

* imgproc(hdr): fix bounds check in HdrDecoder::checkSignature()

* python: filter modules headers (from <module>/include directory)

* Update C++ MobileNet-SSD object detection sample

* Merge pull request opencv#10446 from cabelo:style-dnn-yolo

* add style draw in yolo

* fix sintaxe whitespace

* fix conversion from float to int

* sample refactoring

- minor code style fixes
- avoid confusing "bottom" names
- use cv::format
- always draw object detection/roi

* cmake: avoid unnecessary files creation in ocv_cmake_configure()

* add ocl implementation of proposal layer

Signed-off-by: Li Peng <peng.li@intel.com>

* add opencl option for resnet_ssd_face sample

Signed-off-by: Li Peng <peng.li@intel.com>

* Merge pull request opencv#10493 from RachexCoralie:tiff32FC1Codec

* Load and save tiff images in CV_32FC1 format (1 channel of floats).

* Add test

* Fix error handling and resources leak. Improve test.

* build: eliminate warnings

warning: comparison between signed and unsigned integer expressions [-Wsign-compare]

* build: eliminate warning

warning: 'layout.channel_layout::gchan' may be used uninitialized in this function [-Wmaybe-uninitialized]

* cmake: eliminate ninja generator warning (CMake 3.10), refactor code

* Allow compilation with unified include directory

This makes it possible to compile OpenCV with for instance ndk-r16

* android(toolchain): detailed error message

* android(toolchain): fix find_path() behavior (zlib search problem)

* 3rdparty(protobuf): fix build with Android NDK 16

* android: IPPICV static libraries workarounds for NDK 16

* 3rdparty(libtiff): fix build with Android NDK 16

Compiler message:
tif_unix.c:170:12: error: call to 'mmap' declared with attribute error:
mmap is not available with _FILE_OFFSET_BITS=64 when using GCC until android-21.
Either raise your minSdkVersion, disable _FILE_OFFSET_BITS=64, or switch to Clang.

* cmake(android): fix ccache detection (native Android toolchain with NDK_CCACHE)

To prevent this result:
    /usr/bin/ccache ccache <android-ndk-r16.1>/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc ...
with:
    ccache: error: Recursive invocation (the name of the ccache binary must be "ccache")

* cmake(android): update zlib alias condition

To use 'z' in Android.mk instead of absolute path from the build machine.

* cmake(android): update CMAKE_FIND_ROOT_PATH_MODE_* handling

Avoids this error message with CMake 3.10:
CMake Error: CMake was unable to find a build program corresponding to "Ninja".
CMAKE_MAKE_PROGRAM is not set. You probably need to select a different build tool.

Related changes is that pkg-config tool is found (/usr/bin/pkg-config).

* video(perf): add Mog2/KNN tests, fixed bug in prepareData()

prepareData() bug feeds the same image (the latest)
OCL perf test doesn't pass accuracy(!) check now, so this check is disabled.

* add eltwise layer ocl implementation

Signed-off-by: Li Peng <peng.li@intel.com>

* add normalize_bbox layer ocl implementation

Signed-off-by: Li Peng <peng.li@intel.com>

* Fixed missing #include "../precomp.hpp"

* cmake(android): fix non-idempotent INSTALL scripts

* cmake(android): refactor copying of Android samples project files

* Improve the documentation for cv::Affine3.

* Merge pull request opencv#10529 from LaurentBerger:ExampleGoogleNet

* Add a parameter labels to command line

* default value

* samples: caffe_googlenet.cpp minor refactoring

* Fix typo in video_input_psnr_ssim

* BLOB - Support RGBA

* Bitwise "and false"

Bitwise "and false" is always false.

* dnn: add OPENCV_DNN_DISABLE_MEMORY_OPTIMIZATIONS runtime option

replaces REUSE_DNN_MEMORY compile-time option

* resolves opencv#10548 - `FLANN::knnSearch` garbage bug (when kNN is larger than the dataset size)

* Replace Caffe's psroi_pooling_param tag from 10001 to 10002

* cmake: allow BUILD_FAT_JAVA_LIB for non-Android targets too

* Merge pull request opencv#10502 from cabelo/save-dnn-yolo

Save video file (opencv#10502)

* Merge pull request opencv#10522 from tobycollins:issue10519

* batch_norm and blank layer ocl implementation

Signed-off-by: Li Peng <peng.li@intel.com>

* imgcodecs: remove assert() usage

* imgcodecs: add overflow checks

* imgcodecs: add more Jasper checks for supported and tested cases

* Fixed exception when ROI for generated sample is evaluated out of image borders

* core: fix unresolved symbols from utils::fs

* Merge pull request opencv#10497 from aaron-bray:msvc2017-findcuda

* Update to properly find the compiler tools for MSVC 2017

* FindCUDA: Fix the MSVC 2017 compiler tool locations

* Merge pull request opencv#10466 from dkurt:reduce_umat_try_2

* UMat blobs are wrapped

* Replace getUMat and getMat at OpenCLBackendWrapper

* Added getFontScaleFromHeight()

* modules/videoio: fix PS3Eye camera property window

v2: fix stray trailing whitespace

v3: only allow for up to one property window at the time

Opening multiple windows in the same process will just confuse
the camera filter or outright crash.

Suggested-by: @alalek

Also return whether a dialog was opened at the time.

* Merge pull request opencv#10489 from SarenT:offset-mat_put

Adding capability to parse subsections of a byte array in Java bindings (opencv#10489)

* Adding capability to parse subsections of a byte array in Java bindings. (Because Java lacks pointers. Therefore, reading images within a subsection of a byte array is impossible by Java's nature and limitations. Because of this, many IO functions in Java require additional parameters offset and length to define, which section of an array to be read.)

* Corrected according to the review. Previous interfaces were restored, instead internal interfaces were modified to provide subsampling of java byte arrays.

* Adding tests and test related files.

* Adding missing files for the test.

* Simplified the test

* Check was corrected according to discussion. An OutOfRangeException will be thrown instead of returning.

* java: update MatOfByte implementation checks / tests

* Fixed concurrent OpenCL cache folder name generation

* java(test): fix test names

* java: files rename

intermediate commit (to simplify code review)

* Update documentation

* cmake: Java/Android SDK refactoring

* fixes for old CMake (2.8.12.2)

* java: disable highgui wrapped code

* java: fix bindings generator

- fix imports override.
  Problem is observed with BoostDesc.

- add Ptr<> handling (constructor is protected from other packages).
  Observed in ximgproc:
      Ptr<StereoMatcher> createRightMatcher(Ptr<StereoMatcher> matcher_left)"
  where, "StereoMather" is from another package (calib3d)

* java: fix MacOS Java problem

* android: fix SDK build

- fix Javadoc:
  - generate Javadoc after gather step to process all Java files (including Android 21)
  - generate into 'OpenCV-android-sdk' directly without additional copy step
- use smart copy/move utility functions ('shutil' doesn't well with existed destination)
- by default move files to reduce pressure on storage I/O (> 800Mb)

* cmake: ocv_target_include_directories() handle SYSTEM directories

* Untrainable version of Scale layer from Caffe

* dnn::blobFromImage with OutputArray

* android: update build_sdk.py

- configuration files for ABIs configuration
- use builtin Android NDK's toolchain by default (force flag to use OpenCV's toolchain)
- default values for 'work_dir' and 'opencv_dir'

* Parallelize initUndistortRectifyMap

* Updated protobuf version to 3.5.1

* dnn: Updated protobuf files (3.5.1)

* dnn: protobuf build warnings

* protobuf: drop unused files

* copyright: 2018

* batch_norm layer ocl update

use a batch_norm ocl kernel to do the work

Signed-off-by: Li Peng <peng.li@intel.com>

* Fixed several warnings produced by clang 6 and static analyzers

* Add ThinLTO support for clang

* Propagate calculated Gaussian kernel size(ref). Otherwise, ipp_GaussianBlur will fail if user doesn't specify a kernel size. (opencv#10579)

* core(ocl): fix deadlock in UMatDataAutoLock

UMatData locks are not mapped on real locks (they are mapped to some "pre-initialized" pool).

Concurrent execution of these statements may lead to deadlock:
- a.copyTo(b) from thread 1
- c.copyTo(d) from thread 2
where:
- 'a' and 'd' are mapped to single lock "A".
- 'b' and 'c' are mapped to single lock "B".

Workaround is to process locks with strict order.

* fix: use CXX_STANDARD when extracting compiler flags for PCH with GNUCXX

When compiling with cmake using -DCMAKE_CXX_STANDARD=11 use `-std=gnu++11`
for PCH compiler flags, otherwise it triggers an error:

   opencv_core_Release.gch: not used because `__cplusplus' defined as ` 201103L' not ` 199711L' [-Winvalid-pch]

Use CXX_EXTENSIONS property to select `gnu++11` or `c++11`.
Trying to mimic cmake logic here: https://gitlab.kitware.com/cmake/cmake/blob/master/Source/cmLocalGenerator.cxx#L1527-1557

* fix issue opencv#10612.

* Improve the documentation for cv::completeSymm and cv::RANSACUpdateNumIters.

* Merge pull request opencv#10574 from razerhell:patch-1

* Newton's method can be more efficient

when we get the result of function distortPoint with a point (0, 0) and then undistortPoint with  the result, we get the point not (0, 0). and then we discovered that the old method is not convergence sometimes. finally we have gotten the right values by Newton's method.

* modify by advice  Newton's method...opencv#10574

* calib3d(fisheye): fix codestyle, update theta before exit EPS check

* Power, Tanh and Channels ReLU layer ocl support

Signed-off-by: Li Peng <peng.li@intel.com>

* MVN layer ocl implementation

Signed-off-by: Li Peng <peng.li@intel.com>

* Make DNN Crop layer match Caffe default offset behavior
and add parametric unit test for crop layer.

* Re-apply protobuf fix for JavaScript builds

original commit: f503515
JavaScript bindings for dnn module

* Update samples

* Merge pull request opencv#10412 from GregoryMorse:patch-2

Update to add window position and size retrieval to HighGUI (opencv#10412)

* Update highgui.hpp

Add read only property retrieval for enhanced rendering capabilities and more sophisticated research tools

* Update window.cpp

* Update window_w32.cpp

* Update window_QT.cpp

* Update window_QT.h

* Update window_QT.h

* Update window_gtk.cpp

* Update precomp.hpp

* Update highgui_c.h

* Update highgui_c.h

* Update window_w32.cpp

* Update precomp.hpp

* Update window_QT.cpp

* Update window_QT.h

* Update window_gtk.cpp

* Update window_gtk.cpp

* Update window_w32.cpp

* Update window_QT.cpp

* Update window_carbon.cpp

* Update window_cocoa.mm

* Update precomp.hpp

* Update window_cocoa.mm

* Update window_w32.cpp

* Update window_gtk.cpp

* Update window_QT.cpp

* Update window_gtk.cpp

* Update window_QT.cpp

* Update window_cocoa.mm

* Update window_carbon.cpp

* Update window_w32.cpp

* Update window_cocoa.mm

* Update window_gtk.cpp

* Update window_cocoa.mm

* Update window_gtk.cpp

* Update window_cocoa.mm

* Update window_cocoa.mm

* Update window.cpp

* Update test_gui.cpp

* Update test_gui.cpp

* Update test_gui.cpp

* Update highgui_c.h

* Update highgui.hpp

* Update window.cpp

* Update highgui_c.h

* Update test_gui.cpp

* Update highgui.hpp

* Update window.cpp

* Update window.cpp

* Update window.cpp

* Update window.cpp

* Update window.cpp

* Fix opencv#10525

* Merge pull request opencv#10621 from mshabunin:disable-docs

Documentation generation refactoring (opencv#10621)

* Documentation build updates:

- disable documentation by default, do not add to ALL target
- combine Doxygen and Javadoc
- optimize Doxygen html

* javadoc: fix path in build directory

* cmake: fix "Documentation" status line

* ocl support for Deconvolution layer

Signed-off-by: Li Peng <peng.li@intel.com>

* Improve the doc for cv::Mat::checkVector.

* Improve the documentation for affine transform estimation.

* Fix perf build with CUDA 9.

* cv::cuda::cvtColor bug fix (opencv#10640)

* cuda::cvtColor bug fix

Fixed bug in conversion formula between RGB space and LUV space.
Testing with opencv_test_cudaimgproc.exe, this commit reduces the number
of failed tests from 191 to 95. (96 more tests pass)

* Rename variables

* Improve the doc for fundamental matrix.

* run.py: simplified scripts, fixed most of PEP8 warnings

* more update on MVN layer ocl implementation

cut one ocl kernel if normVariance is disabled,
also use native_powr for performance reason.

Signed-off-by: Li Peng <peng.li@intel.com>

* Merge pull request opencv#10649 from GregoryMorse:patch-3

* Fix for QT image window rectangle

* Update window_QT.h

* Update window_QT.cpp

* trailing whitespace

* highgui: fix QT getWindowImageRect()

* ocl: Avoid unnecessary initializing when non-UMat parameters are used

* bitexact gaussianblur implementation (opencv#10345)

* Bit-exact implementation of GaussianBlur smoothing

* Added universal intrinsics based implementation for bit-exact CV_8U GaussianBlur smoothing.

* Added parallel_for to evaluation of bit-exact GaussianBlur

* Added custom implementations for 3x3 and 5x5 bit-exact GaussianBlur

* core(perf): refactor kmeans test

- don't use RNG for "task size" parameters (N, K, dims)
- add "good" kmeans test data (without singularities: K > unique points)

* core: fix kmeans multi-threaded performance

* core: kmeans refactoring

- reduce scope of i,k,j variables
- use cv::AutoBuffer
- template<bool onlyDistance> class KMeansDistanceComputer
- eliminate manual unrolling: CV_ENABLE_UNROLLED

* OpenCV face detection network test

* persistence: replace arbitrary limit of cn to 4 by CV_CN_MAX (opencv#10636)

* persistence: replace arbitrary limit of cn to 4 by CV_CN_MAX

* python: added persistence test, remove temp files

* fixup! python: added persistence test, remove temp files

* fixup! python: added persistence test, remove temp files

* add HAL for FAST (opencv#10362)

* add HAL for FAST

* add new interface

* bad image file

* PriorBox layer with explicit normalized sizes

* core(lapack): fix build issues related to 'extern "C"'

* Merge pull request opencv#10663 from jmlich:master

* hogsvm compatibility with python3

* VS with hardening: added guard flag, moved dynamicbase and safeseh to linker flags

* Exported a high level stitcher the DLL

allows Stitcher to be used for scans from within python.
I had to use very strange notation because I couldn't export the `enum`
`Mode` making the Cpython generated code unable to compile.

```c++
class Stitcher {
public:
enum Mode
    {
        PANORAMA = 0,
        SCANS = 1,
    };
...
```

Also removed duplicate code from the `createStitcher` function making
use of the `Stitcher::create` function

* convolution and tanh layer fusion

Signed-off-by: Li Peng <peng.li@intel.com>

* mvn, batch_norm and relu layer fusion

Signed-off-by: Li Peng <peng.li@intel.com>

* IntrinsicParams operator+ fix

* solve issue opencv#10687

* Merge pull request opencv#10700 from alalek:cpu_dispatch_axv512

* cmake: enable CPU dispatching for AVX512 (SKX)

* cmake: update handling of unsupported flags/modes

* Merge pull request opencv#10667 from paroj:stereo_calib_ex

 calib3d: add stereoCalibrateExtended (opencv#10667)

* cvCalibrateCamera2Internal: simplify per view error computation

* calib3d: add stereoCalibrateExtended

- allow CALIB_USE_EXTRINSIC_GUESS
- returns per view errors

* calib3d: add stereoCalibrateExtended test

* Merge pull request opencv#10697 from woodychow:tbb_task_arena

* Use Intel TBB's task arena if possible

* dnn(ocl): fix build options for Apple OpenCL