opencv-users

Comparison of two bmp files

Classic

List

Threaded

4 messages Options

Abhishek Tiwari

Comparison of two bmp files

Hello Everyone,

I have to write C/C++ program for this task
----------------------------
Compare two bmp files, Pixels that are NOT the same - make them GREEN. Write diff to a new bmp file : diff.bmp
----------------------------

Could you please help

Best Regards
Abhishek

Bob Davies

Re: Comparison of two bmp files

You could use OpenCV's matchTemplate

https://docs.opencv.org/2.4/doc/tutorials/imgproc/histograms/template_matching/template_matching.html

kaolin

Re: Comparison of two bmp files

In reply to this post by Abhishek Tiwari

If it's literally a per-pixel difference, cv has a "diff" function.

https://stackoverflow.com/questions/27035672/cv-extract-differences-between-two-images
is doing a more complex thing than it sounds like you need (it always
helps to send sample images), but it has discussion over image channels
and the simple way of looping through a cv::mat, and such.

-kaolin

On 11/8/18 3:55 AM, Abhishek Tiwari [hidden email] [OpenCV] wrote:

>
> Hello Everyone,
>
> I have to write C/C++ program for this task
> ----------------------------
> Compare two bmp files, Pixels that are NOT the same - make them GREEN.
> Write diff to a new bmp file : diff.bmp
> ----------------------------
>
> Could you please help
>
> Best Regards
> Abhishek
>
>

Abhishek Tiwari

Re: Comparison of two bmp files

In reply to this post by Abhishek Tiwari

Thank you so much for the help & Information, Kaolin & Bob Davies.
I really appreciate :-)
Best Regards
Abhishek

--------------------------------------------
On Thu, 11/8/18, Kaolin Fire [hidden email] [OpenCV] <[hidden email]> wrote:

Subject: Re: [OpenCV] Comparison of two bmp files
To: [hidden email]
Date: Thursday, November 8, 2018, 4:35 PM

If
it's literally a per-pixel
difference, cv has a "diff" function.

https://stackoverflow.com/questions/27035672/cv-extract-differences-between-two-images
is doing a more complex thing than it sounds like you
need (it
always helps to send sample images), but it has
discussion over
image channels and the simple way of looping through a
cv::mat,
and such.

-kaolin

On 11/8/18 3:55 AM, Abhishek Tiwari [hidden email]
[OpenCV] wrote:

Hello Everyone,

I have to write C/C++ program for this task

----------------------------

Compare two bmp files, Pixels that are NOT the
same - make
them GREEN. Write diff to a new bmp file :
diff.bmp

----------------------------

Could you please help

Best Regards

Abhishek

#yiv9217395573 #yiv9217395573 --
#yiv9217395573ygrp-mkp {
border:1px solid #d8d8d8;font-family:Arial;margin:10px
0;padding:0 10px;}

#yiv9217395573 #yiv9217395573ygrp-mkp hr {
border:1px solid #d8d8d8;}

#yiv9217395573 #yiv9217395573ygrp-mkp #yiv9217395573hd {
color:#628c2a;font-size:85%;font-weight:700;line-height:122%;margin:10px
0;}

#yiv9217395573 #yiv9217395573ygrp-mkp #yiv9217395573ads {
margin-bottom:10px;}

#yiv9217395573 #yiv9217395573ygrp-mkp .yiv9217395573ad {
padding:0 0;}

#yiv9217395573 #yiv9217395573ygrp-mkp .yiv9217395573ad p {
margin:0;}

#yiv9217395573 #yiv9217395573ygrp-mkp .yiv9217395573ad a {
color:#0000ff;text-decoration:none;}
#yiv9217395573 #yiv9217395573ygrp-sponsor
#yiv9217395573ygrp-lc {
font-family:Arial;}

#yiv9217395573 #yiv9217395573ygrp-sponsor
#yiv9217395573ygrp-lc #yiv9217395573hd {
margin:10px
0px;font-weight:700;font-size:78%;line-height:122%;}

#yiv9217395573 #yiv9217395573ygrp-sponsor
#yiv9217395573ygrp-lc .yiv9217395573ad {
margin-bottom:10px;padding:0 0;}

#yiv9217395573 #yiv9217395573actions {
font-family:Verdana;font-size:11px;padding:10px 0;}

#yiv9217395573 #yiv9217395573activity {
background-color:#e0ecee;float:left;font-family:Verdana;font-size:10px;padding:10px;}

#yiv9217395573 #yiv9217395573activity span {
font-weight:700;}

#yiv9217395573 #yiv9217395573activity span:first-child {
text-transform:uppercase;}

#yiv9217395573 #yiv9217395573activity span a {
color:#5085b6;text-decoration:none;}

#yiv9217395573 #yiv9217395573activity span span {
color:#ff7900;}

#yiv9217395573 #yiv9217395573activity span
.yiv9217395573underline {
text-decoration:underline;}

#yiv9217395573 .yiv9217395573attach {
clear:both;display:table;font-family:Arial;font-size:12px;padding:10px
0;width:400px;}

#yiv9217395573 .yiv9217395573attach div a {
text-decoration:none;}

#yiv9217395573 .yiv9217395573attach img {
border:none;padding-right:5px;}

#yiv9217395573 .yiv9217395573attach label {
display:block;margin-bottom:5px;}

#yiv9217395573 .yiv9217395573attach label a {
text-decoration:none;}

#yiv9217395573 blockquote {
margin:0 0 0 4px;}

#yiv9217395573 .yiv9217395573bold {
font-family:Arial;font-size:13px;font-weight:700;}

#yiv9217395573 .yiv9217395573bold a {
text-decoration:none;}

#yiv9217395573 dd.yiv9217395573last p a {
font-family:Verdana;font-weight:700;}

#yiv9217395573 dd.yiv9217395573last p span {
margin-right:10px;font-family:Verdana;font-weight:700;}

#yiv9217395573 dd.yiv9217395573last p
span.yiv9217395573yshortcuts {
margin-right:0;}

#yiv9217395573 div.yiv9217395573attach-table div div a {
text-decoration:none;}

#yiv9217395573 div.yiv9217395573attach-table {
width:400px;}

#yiv9217395573 div.yiv9217395573file-title a, #yiv9217395573
div.yiv9217395573file-title a:active, #yiv9217395573
div.yiv9217395573file-title a:hover, #yiv9217395573
div.yiv9217395573file-title a:visited {
text-decoration:none;}

#yiv9217395573 div.yiv9217395573photo-title a,
#yiv9217395573 div.yiv9217395573photo-title a:active,
#yiv9217395573 div.yiv9217395573photo-title a:hover,
#yiv9217395573 div.yiv9217395573photo-title a:visited {
text-decoration:none;}

#yiv9217395573 div#yiv9217395573ygrp-mlmsg
#yiv9217395573ygrp-msg p a span.yiv9217395573yshortcuts {
font-family:Verdana;font-size:10px;font-weight:normal;}

#yiv9217395573 .yiv9217395573green {
color:#628c2a;}

#yiv9217395573 .yiv9217395573MsoNormal {
margin:0 0 0 0;}

#yiv9217395573 o {
font-size:0;}

#yiv9217395573 #yiv9217395573photos div {
float:left;width:72px;}

#yiv9217395573 #yiv9217395573photos div div {
border:1px solid
#666666;min-height:62px;overflow:hidden;width:62px;}

#yiv9217395573 #yiv9217395573photos div label {
color:#666666;font-size:10px;overflow:hidden;text-align:center;white-space:nowrap;width:64px;}

#yiv9217395573 #yiv9217395573reco-category {
font-size:77%;}

#yiv9217395573 #yiv9217395573reco-desc {
font-size:77%;}

#yiv9217395573 .yiv9217395573replbq {
margin:4px;}

#yiv9217395573 #yiv9217395573ygrp-actbar div a:first-child {
margin-right:2px;padding-right:5px;}

#yiv9217395573 #yiv9217395573ygrp-mlmsg {
font-size:13px;font-family:Arial, helvetica, clean,
sans-serif;}

#yiv9217395573 #yiv9217395573ygrp-mlmsg table {
font-size:inherit;font:100%;}

#yiv9217395573 #yiv9217395573ygrp-mlmsg select,
#yiv9217395573 input, #yiv9217395573 textarea {
font:99% Arial, Helvetica, clean, sans-serif;}

#yiv9217395573 #yiv9217395573ygrp-mlmsg pre, #yiv9217395573
code {
font:115% monospace;}

#yiv9217395573 #yiv9217395573ygrp-mlmsg * {
line-height:1.22em;}

#yiv9217395573 #yiv9217395573ygrp-mlmsg #yiv9217395573logo {
padding-bottom:10px;}

#yiv9217395573 #yiv9217395573ygrp-msg p a {
font-family:Verdana;}

#yiv9217395573 #yiv9217395573ygrp-msg
p#yiv9217395573attach-count span {
color:#1E66AE;font-weight:700;}

#yiv9217395573 #yiv9217395573ygrp-reco
#yiv9217395573reco-head {
color:#ff7900;font-weight:700;}

#yiv9217395573 #yiv9217395573ygrp-reco {
margin-bottom:20px;padding:0px;}

#yiv9217395573 #yiv9217395573ygrp-sponsor #yiv9217395573ov
li a {
font-size:130%;text-decoration:none;}

#yiv9217395573 #yiv9217395573ygrp-sponsor #yiv9217395573ov
li {
font-size:77%;list-style-type:square;padding:6px 0;}

#yiv9217395573 #yiv9217395573ygrp-sponsor #yiv9217395573ov
ul {
margin:0;padding:0 0 0 8px;}

#yiv9217395573 #yiv9217395573ygrp-text {
font-family:Georgia;}

#yiv9217395573 #yiv9217395573ygrp-text p {
margin:0 0 1em 0;}

#yiv9217395573 #yiv9217395573ygrp-text tt {
font-size:120%;}

#yiv9217395573 #yiv9217395573ygrp-vital ul li:last-child {
border-right:none !important;
}
#yiv9217395573