Images XOR, AND, etc... logical operators to compare two distinct objects

is there a way of comper two images without comparing all it bytes...
the problem: actually I�m parsing the values of the bytes of the two images and then comparing it...
idea: if I have the two byte arrays containing the image info.. may I use a logical operator to compare these objects ??

FelipeGaucho again,
Did you come up with an optimized method for logical operators? I actually want to perform the boolean operations to turn most pixels of an image to zero, then compress that (as in your post 'String compressor II'). Are these two posts related for you as well? They are separated by several months.
abnormal,
I'm assuming that Java's classes would be optimized, but if my code will execute at the same speed as theirs, then I guess I can stop searching for optimized (or already provided) classes. Do you know if Java's provided classes run faster than classes we create? I'm going to test the provided System.arraycopy against my own while waiting for a reply.

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sabre150 wrote:
Bren_McGuire wrote:
Thanks guys.
I'd just found it too right after I made this post. :p95% of the time the promised Dukes never arrive so thanks for the Dukes.Ditto

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I am missing a lot more than 41 tracks, I am guessing a few hundred (200 - 300 plus?).
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The way I will do it is to creat a new class that extends java.mail.Message. In such a subclass, one can override "equal" method to compare the data within.

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I currently have written code which has two for loops to search a user query. I am able to search user queries entered for a simple and composed query. Eg. Simple query can be "Hello" and composed query can be "Hello World".
What i would like to do now is be able to use logical operators such as "AND", "OR" when searching e.g. "Hello AND World" or "Hello OR World" Once this is done i would like to score the highest point depending on where the query is found.
Could someone please help me with either giving me some tips of going about this or some starting code and hints. I have attached some code below which explains what i am currently doing to do the simple query.
private void SearchButtonActionPerformed(java.awt.event.ActionEvent evt) {
/* Gets the simple query enterted into the text field. It then looks at the strippedFile in memmory */
long start = System.currentTimeMillis();
// long elapsed = System.currentTimeMillis() - start;
String userQuery = SearchTextField.getText();
StringTokenizer userQ = new StringTokenizer(userQuery);
String[] brokenStrings = new String[userQ.countTokens()];
int counter2 = 0;
while (userQ.hasMoreTokens()) {
String moreStrings = userQ.nextToken();
brokenStrings[counter2] = moreStrings;
counter2++;
int Simplematches = 0;
for (int i = 0; i < strippedFile.length; i++) {
String LongCurrentLine = strippedFile;
StringTokenizer st = new StringTokenizer(LongCurrentLine);
String[] currentline = new String[st.countTokens()];
int counter = 0;
while (st.hasMoreTokens()) {
String moreStrings1 = st.nextToken();
currentline[counter] = moreStrings1;
counter++;
highlighter.highlight(HTMLOutputTextArea, userQuery);
for (int j = 0; j < brokenStrings.length; j++) {
for (int k = 0; k < currentline.length; k++) {
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long elapsed = System.currentTimeMillis() - start;
Simplematches++;
String output = "\"" + currentline[k] + "\" was found on line " + (i + 1) + "." + " At postion " + (k + 1) + " and took " + elapsed + " milliseconds." + " Found " + Simplematches + " matches" + "\n";
//String output = "\"" + currentline[k] + "\" was found on line " + (i + 1)+ "." + " At postion " + (k + 1) + " Found "+ Simplematches+ " matches"+ "\n";

jschell wrote:
london_guy86 wrote:
jschell wrote:
Not clear what you search, but....
First you need to specifically define the syntax. For example what does the following mean?
a OR b AND c OR d
Once you do that then you parse the input to create an expression tree. Then you write an interpreter to run the expression tree.Is there any chance you could give me a starter code or soe sources i could look at. I really dont understand how to go about doing what you have mentioned. As in i have declared the syntax at the moment and i am then using the replaceAll() and calling in what i have declared. with empty strings.
Is this what you mean?Hard to say since I don't understand your statement.
There are three parts
1. Parse the expression.
2. Interpret the expression
3. Do the "search", this is actually part of 2 however it should be possible to implement some or all of it separate from 1 and 2.
Do NOT mix the three parts until you are ready to mix them.
Your posted code is mixing them.
Presumably what you posted is mostly search. So to start re-write JUST the search code as a class.
However you can't really do that until you define what the expressions do.After doing everything you mentioned do you think it would be hard to get a score on the best match search found?
If not could you also give me some tips towards that if you know any.
Thanks

Query form requires Logical operators and/or Quotes

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How do I hard code the "=" and quotes around strings so that the user doesn't have to?

In ORACLE 9I Jdeveloper beta I used the BC4J JSP wizard to create a - Query Form. The query form looks nice and runs except I have to also include the logical operators (= > <) and Quotes. For example to query on the name Joe I have to enter it as ="JOE". If I use JOE it gives me a JSP error. The error message shows the generated Select statment with the where clause JOE but is missing the "=" and quotes.
How do I hard code the "=" and quotes around strings so that the user doesn't have to?

Vivado 2015.2: Simulation and synthesis reverse bit order of std_logic_vector in logical operators

In both simulation and synthesis the logical operators on std_logic_vector bit-reverse the operands in the result, at least in the case where the result of the expression is passed to a function.
I suspect this issue applies to other operators as well, though I have only tested the problem with the logical operators. I also suspect the issue exists in other situations where a function is not involved.
This is incompatible with both ModelSim simulation and XST synthesis and it breaks a lot of our code.
The attached xsim7.vhd example shows the issue. The xsim7.tcl script will run the Vivado simulation. Under Windows, the xsim7.bat will run the whole thing. The xsim7.xpr project file allows synthesis under Vivado, and you can look at the schematic to see the issue in the synthesized netlist.
The source module also simulates under ModelSim and synthesizes under XST, and these show what I believe to be correct behavior.
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Ian Lewis
www.mstarlabs.com

Hello Bharath,
When I said "what was index 'LOW becomes index 'HIGH" I meant the 'LOW of the source operands and the 'HIGH of the result, independent of the actual index range. I would have no problem with any 'HIGH and 'LOW on the result of the operator as long as the direction matched the left source operand, though personally I would prefer the same 'HIGH and 'LOW as that of the left operand.
Looking at the IEEE implementation of logical "or" on std_logic_vector from package std_logic_1164: https://standards.ieee.org/downloads/1076/1076.2-1996/std_logic_1164-body.vhdl:
-- or
FUNCTION "or" ( l,r : std_logic_vector ) RETURN std_logic_vector IS
ALIAS lv : std_logic_vector ( 1 TO l'LENGTH ) IS l;
ALIAS rv : std_logic_vector ( 1 TO r'LENGTH ) IS r;
VARIABLE result : std_logic_vector ( 1 TO l'LENGTH );
BEGIN
IF ( l'LENGTH /= r'LENGTH ) THEN
ASSERT FALSE
REPORT "arguments of overloaded 'or' operator are not of the same length"
SEVERITY FAILURE;
ELSE
FOR i IN result'RANGE LOOP
result(i) := or_table (lv(i), rv(i));
END LOOP;
END IF;
RETURN result;
END "or";
the operator does exactly what Vivado seems to be doing: alias the downto source vectors to a to range of 1 to 'LENGTH and then return a vector of 1 to 'LENGTH. This both bit reverses the downto indexes (the alias on the source operands does that) and changes the range to "to" with a 'LOW value of 1.
This gives us the 'LEFT 1 and 'RIGHT 4 we see.
So far, I have found no definition from IEEE of what logical operators, such as "or", are supposed to do on std_logic_vector except as defined by this piece of code for "or" and the other operators' associated bodies from the std_logic_1164 package.
What this code does seems like a horrible decision about how to implement the logical operators on std_logic_vector with respect to range direction, but it is compatible with what Vivado does, and incompatible with what XST does. (I had never investigated this issue before because what ModelSim and XST did made perfect sense to me.)
That the assignment (Result := s) works as expected, makes sense. The assignment of the "to" range s to the "downto" range Result maintains the 'LEFT relationship. That is, Result'LEFT (index 3) receives s'LEFT (index 1). So, the bits are reversed a second time.
That ISIM does not match what XST does seems like a defect no matter how you look at it. Your simulation can never match your synthesis if you care about the range direction inside a function (and I suspect in other places too). This deserves an SR or CR if you are still doing any work on those two tools. I think you may not be.
Are you able to find out whether Vivado was changed from XST on purpose with respect to the behavior of logical operators?
If this is "as designed" then I have to start working on updating our code to live with it. But, if this is something that happened by accident, and you will change Vivado to match XST, then I probably want to wait. Updating our code to live with this behavior is going to be a pretty big job.
Thank you for your help,
Ian

How to compare two images and display the difference on Front Panel

HI..
I have attached two images.
I want to compare these two images and subtract the differenc from these two images and display the difference(the mouse) on the front panel
Anyone can help me?
Really thanks
Attachments:
IMG_2117.JPG ‏1677 KB
IMG_2118.JPG ‏1650 KB

The missing thing. You have to keep in mind that what you see is not the same as the camera sees.
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Christian

I am new to ios & using 5C. I want to know where is all the media (Images, videos, Audio etc) received through Whatsapp are saved after downloading in Iphone. And also how to access the same.

I am new to ios & using 5C. I want to know where is all the media (Images, videos, Audio etc) received through Whatsapp are saved after downloading in Iphone. And also how to access the same.

These are user to user forums. You ARE NOT addressing Apple by posting here.
Also, why are you YELLING at us?? Stop using ALL CAPS.
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Gary
~~~~
   If all the seas were ink,
   And all the reeds were pens,
   And all the skies were parchment,
   And all the men could write,
   These would not suffice
   To write down all the red tape
   Of this Government.

Images XOR, AND, etc... logical operators to compare two distinct objects

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