c# - Comparing 2 bitmaps taken 1 second after another -


i thinking writing simple program compare 2 argb array pixel pixel. both images same resolution, taken same camera source.

since camera being hold still, expecting it's simple program compare bitmap source by

  1. convert every pixel gray scale pixel
  2. literally compare each pixel position 0 n.
  3. have isclose method approximate +/- 3.

the result have error bits. when taking jpeg out of , view naked eye, seem identical (which case).

why think seeing error when comparing them?

btw - trying write basic version of motion detection.

if tracking known object can pre-process images before compare them. example, if it's ball you're tracking , appears brighter surroundings, can threshold greyscale image produce image black or white. detect known "contours" (see opencv documentation). once contour after (the ball) in image, can compare location of in each successive image. there algorithms figure out moving object next helps finding in next frame. without knowing doing, it's hard give concrete.
, see you're c#...maybe help: .net (dotnet) wrappers opencv?


Comments

Post a Comment

Popular posts from this blog

php - Submit Form Data without Reloading page -

i know question has been asked , answered bunch of times life of me can not solution work on code. believe if redo code, work properly, , in retrospect time i've spent on issue should have redone code...but beyond deadline , have working prototype up... can advise how update multiple forms on single page without reloading page? horrible @ php , complete noob js/jquery/ajax @ best. html/php in single file , believe causing me problems/is largest obstacle @ getting ajax form processing work. basically, want users to: select teams multiple dropdowns in form group 1 (league champs) , on update update db newly selected team without reloadding page. edit team scores per match , on score submit/update, update db new scores. for each requirement there multiple forms (1 each leagues, 1 each per match) have set class on each form id. everything works via php, form submission reloads page each time submitted , not ideal. i have tried ajax code here http://scotch.io/tutoria...
Read more

linux - Rails running on virtual machine in Windows -

the reason why want switch ubuntu people said gems works better on linux on windows. i don't want macbook pro rails development since love windows , cannot stand lack of apps mac. moreover, people saying ubuntu "better" mac: http://www.reddit.com/r/ubuntu/comments/1bgj1s/are_there_advantages_of_ubuntu_over_os_x_for/ does virtual box work enough doesn't have lag @ all? using i7-3517u cpu 8gb memory. need program in environment lag-free , not sluggish. or there alternatives recommend? i unsure permission settings or complicated stuffs regarding terminal. i'll using terminal develop. i'm still quite new here development in linux. please kind me >< thanks. @holyxiaoxin pretty sure should asking on superuser instead. nevertheless, suggest install ubuntu in partition instead of running virtual machine. here's guide https://help.ubuntu.com/community/windowsdualboot also, yes. developing in virtual machine accurate, @ end experiment w...
Read more