3

I am trying to compare images and find if they are same or not. Images can have same name but the actual image might be different. The code that I have so far. 

<cfset dirToReadFrom = #ExpandPath( '../properties-feed/unzipped/' )# />

<cfdirectory
action="list"
directory="#dirToReadFrom#"
listinfo="name"
name="qFile"
sort="asc"
filter="*.jpg"
/>

<cfset images = ArrayNew(1)>
<cfoutput query="qFile">
    <cfset ArrayAppend(images, #qFile.name#)>
</cfoutput>

<cfset dirToCreate = #ExpandPath( './assets/images/resized/original/' )# />
<cfif not DirectoryExists(dirToCreate)>
    <cfdirectory action = "create" directory = "#dirToCreate#" />
    <cfoutput><p>Your directory has been created.</p></cfoutput>
</cfif>
<cfzip
action="unzip"
file="#ExpandPath( '../properties-feed/data.zip/' )#"
destination="#ExpandPath( './assets/images/resized/original/' )#"
overwrite="true"
/>

<cfset dirToReadFromOriginal = #ExpandPath( './assets/images/resized/original/' )# />

<cfdirectory
action="list"
directory="#dirToReadFromOriginal#"
listinfo="name"
name="qFileOriginal"
sort="asc"
filter="*.jpg"
/>
<cfset imagesLatest = ArrayNew(1)>
<cfoutput query="qFileOriginal">
    <cfset ArrayAppend(imagesLatest, #qFileOriginal.name#)>
</cfoutput>

<!--- Loop over your current images --->
<cfloop query="qFileOriginal">
    <!--- Check for a matching file name --->
    <cfquery name="fileExists" dbtype="query">
        SELECT
            COUNT(*) AS num_Rec
        FROM
            qfile
        WHERE
            name = <cfqueryparam cfsqltype="cf_sql_varchar" value="#qFileOriginal.name#" />
    </cfquery>

    <!--- do we have a matching file name? --->
    <cfif val(fileExists.num_rec)>
        <cfimage action="read" name="newImage" source="#dirToReadFrom##qFile.name#"/>
        <cfimage action="read" name="originalImage" source="#dirToReadFromOriginal##qFileOriginal.name#"/>

        <cfset newImageBlob = ImageGetBlob(newImage) />
        <cfset originalImageBlob = ImageGetBlob(originalImage) />       

        <!--- Compare --->  
        <cfif toString(newImageBlob) eq toString(originalImageBlob) >
            Images are same
            <cfelse>
            DIFFERENT
        </cfif>     

    </cfif>

</cfloop>

The code doesn't seem to be working. Can Anyone see what am I doing wrong?

Update 1 from comments

The result that I actually get is that the first images are same and the rest of images in files are different. But this is not correct as most of the images that I am comparing are same.

Update 2 from comments

It incorrectly identifies same images as being different. What I actually get is that the first two images are same and the rest is different. Which is not right as most of the images I have are same.

4

1 回答 1

1

我总是用 BinaryEncode() 来做这个，然后比较结果字符串。但是你必须小心，因为压缩可以使文件不同，即使它们看起来（看起来）完全相同。

于 2014-01-21T09:09:11.623 回答