{"id":4795,"date":"2020-03-24T16:03:50","date_gmt":"2020-03-24T07:03:50","guid":{"rendered":"http:\/\/aval-global.com\/?p=4795"},"modified":"2020-03-24T20:16:55","modified_gmt":"2020-03-24T11:16:55","slug":"c-comparison-of-obtaining-the-brightness-value-of-image","status":"publish","type":"post","link":"https:\/\/aval-global.com\/?p=4795","title":{"rendered":"[C#] Comparison processing time of obtaining the brightness value of image"},"content":{"rendered":"

It is common to obtain or set up the brightness by exposing the button at LockBits~UnlockBits in C#, as using GetPixel or SetPixel method make the brightness value obtaining process slow. Today, I will compare the processing time by using different modes.<\/p>\n\n\n\n\n\n\n\n\n\n
Testing Environment<\/span><\/td>\n<\/tr>\n
OS<\/td>\nWindows10 64bit ver.1809<\/td>\n<\/tr>\n
CPU<\/td>\nIntel Core i7-7700K 4.2GHz<\/td>\n<\/tr>\n
Memory<\/td>\n32GB<\/td>\n<\/tr>\n
.NET Framework<\/td>\n4.5.2<\/td>\n<\/tr>\n
Platform<\/td>\nAny CPU (32Bit prioritized)<\/td>\n<\/tr>\n
Evaluation Image<\/td>\nJPEG 6,000 x 4,000px 24bit Color<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

In this test, I will obtain the color image\u2019s brightness value in R,G,B respectively and use the program, in which I reverse the intensity value and re-apply the brightness value of the color image.<\/p>\n

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  • I set up the process to repeat in the order of \u201cbright\u2192dark\u2192bright\u2192dark\u201d as seen below.<\/li>\n
  • Processing time : I measured the average time in processing 5 repetitions.<\/li>\n<\/ul>\n

    <\/p>\n<\/div><\/div><\/div>

    1. Using GetPixel, SetPixel<\/h3>\n<\/div>