www.gusucode.com > IPCV_Eval_Kit_R2019a_0ce6858工具箱matlab程序源码 > IPCV_Eval_Kit_R2019a_0ce6858/code/demo_files/I1_04_2_Speed_Up.m
clc;close all;imtool close all;clear; %% 攝楍偺帠慜妱傝摉偰側偟乮掅懍乯 % 儖乕僾偺拞偱曄悢x偺梫慺偺悢偑偩傫偩傫戝偒偔側傞 clear tic for n = 1:1e7 x(n) = n; end toc %% 攝楍偺帠慜妱傝摉偰乮崅懍乯 clear x = zeros(1e7,1); tic for n = 1:10000000 x(n) = n; end toc %% 梫慺傪僗僉儍儞偡傞:墶曽岦 乮掅懍乯 % 4000x4000偺峴楍偺丄梫慺偑0.5埲忋偺応強傪true偵偡傞 clear X = rand(4000); Y = false(4000); tic for r = 1:4000 % 峴 for c = 1:4000 % 楍 if X(r, c) > 0.5 Y(r, c) = true; end end end toc %% 廲曽岦偵梫慺傪僗僉儍儞偡傞乮懍偄乯 clear X = rand(4000); Y = false(4000); tic for c = 1:4000 % 楍 for r = 1:4000 % 峴 if X(r, c) > 0.5 Y(r, c) = true; end end end toc %% 攝楍偱張棟 (傛傝崅懍) clear X = rand(4000); Y = false(4000); tic Y = X > 0.5; toc %% Copyright 2015 The MathWorks, Inc.