Contents

4-1, 4-2 : Point processing

• Image processing with constant +, -, *, / (gray, color cuda)
• 상수로 +, -, *, / 로 영상 변화 살펴보기 (gray, color, cuda)

OpenCV Lecture - 4. point processing (1/8) : constant operation(+, -, /, * )

OpenCV Lecture - 4. Point processing (2/8) : constant operation(+, -, /, * )

💡 parallel_for_, cuda abs diff, cuda add, multiply, divide, add, subtract

4-3 : Parallel processing for point adding

• Practice adding pixel values with parallel processing using "parallel_for_"
• "parallel_for_" 를 이용하여 병렬처리로 픽셀값 더하기 실습

OpenCV Lecture - 4. Point processing (3/8) : Parallel processing for point adding

4-4 : Image +, -, /, * operation

• Image processing between image with +, -, /, * (synthesis(+), cuda, addweighted)
• 영상간에 +, -, *, / 해보기( 영상합성(+), cuda, addweighted)

OpenCV Lecture - 4. point processing (4/8) : Image +, -, /, * operation

💡 addWeighted, divide, multiply, subtract, add, resize

4-5 : Video frame subtraction (비디오 차영상 실습)

OpenCV Lecture - 4. point processing (5/8) : Video frame subtraction

💡 VideoCapture, subtract, absdiff

4-6 : masking operation using and, or, xor, not operator (and, or, xor, not로 마스킹 처리)

OpenCV Lecture - 4. point processing (6/8) : image and, or, xor, not operation

💡 circle, setTo, CV_FILLED, bitwise_and, bitwise_or, bitwise_xor, bitwise_not

4-7 : noise generation (랜덤하게 노이즈 뿌려보기)

OpenCV Lecture - 4. point processing (7/8) : noise generation

💡 randn, randu, srand, rand, cvtColor, minMaxIdx, threshold

4-8 : Fast LookUp Table

• What is LUT? How to use applyColorMap
• LUT example code and practice about custom LUT
• applyColorMap 사용법, LUT의 적용 예제
• 사용자 직접 LUT 만들기

OpenCV Lecture - 4. point processing (8/8) : Fast Lookup Table

💡 LUT, LookUpTable, applyColorMap, cvtColor, FastLUT

LUT Example source code

• Loop & LUT processing time compare: http://study.marearts.com/2018/05/loop-lut-processing-time-compare.html
• example for applyColorMap usage : http://study.marearts.com/2018/05/example-for-applycolormap-usage.html

Noise & Bit operation example source code

• Noise generation (randn, randu, iteration, minMax) : http://study.marearts.com/2017/03/opencv-lecture-4-7-source-code-noise.html
• 2 circles bit operation : http://study.marearts.com/2017/02/opencv-lecture-and-or-xor-not-example.html

Masking Example Source code

• Masking to image : http://study.marearts.com/2017/02/opencv-lecture-and-or-xor-not-example_14.html
• SetTo, Masking : http://study.marearts.com/2017/02/opencv-setto-copyto-masking-example.html
• CopyTo, Masking : http://study.marearts.com/2017/02/opencv-setto-copyto-masking-example.html

Subtraction & operation test example source code

• Video difference example code : http://study.marearts.com/2017/02/cvlecture-example-code-video-subtraction.html
• add, subtract, multiply, divide, addWeighted : http://study.marearts.com/2017/02/cvlecture-example-code-operation.html
• cpu version, gpu, tbb(parallel) 처리속도 비교 - add, subtract, absdiff, multiply, divide : http://study.marearts.com/2017/01/opencv-add-subtract-multiply-divide.html

🙇🏻 Thank you!

🎁 Source code, Material(pdf) and example images 👇

https://www.marearts.com/products/opencv-lecture-materials-1