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<TITLE>sane-devel: Re: The problem of xscanimage by CanoscanFB620S</TITLE>
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<META NAME="Author" CONTENT="Mitsuru Okaniwa (m-okaniwa@bea.hi-ho.ne.jp)">
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<META NAME="Subject" CONTENT="Re: The problem of xscanimage by CanoscanFB620S">
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<H1>Re: The problem of xscanimage by CanoscanFB620S</H1>
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<!-- received="Sun Oct 8 07:52:48 2000" -->
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<!-- sent="Sun, 8 Oct 2000 21:57:12 +0900" -->
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<!-- isosent="20001008125712" -->
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<!-- name="Mitsuru Okaniwa" -->
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<!-- email="m-okaniwa@bea.hi-ho.ne.jp" -->
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<!-- subject="Re: The problem of xscanimage by CanoscanFB620S" -->
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<STRONG>From:</STRONG> Mitsuru Okaniwa (<A HREF="mailto:m-okaniwa@bea.hi-ho.ne.jp?Subject=Re:%20The%20problem%20of%20xscanimage%20by%20CanoscanFB620S&In-Reply-To=<001201c03127$537a8d80$6425530a@necpcuser>"><EM>m-okaniwa@bea.hi-ho.ne.jp</EM></A>)<BR>
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<STRONG>Date:</STRONG> Sun Oct 08 2000 - 05:57:12 PDT
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<LI><STRONG>Next message:</STRONG> <A HREF="0074.html">Lawrence Glaister: "Re: [SnapScan] color problem 300dpi"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0072.html">Steve Underwood: "Re: [SnapScan] color problem 300dpi"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0047.html">Lawrence Glaister: "Re: The problem of xscanimage by CanoscanFB620S"</A>
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----- Original Message -----
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<BR>
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from: "Lawrence Glaister" <<A HREF="mailto:lg@jfm.bc.ca?Subject=Re:%20The%20problem%20of%20xscanimage%20by%20CanoscanFB620S&In-Reply-To=<001201c03127$537a8d80$6425530a@necpcuser>">lg@jfm.bc.ca</A>>
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<BR>
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to: <<A HREF="mailto:sane-devel@mostang.com?Subject=Re:%20The%20problem%20of%20xscanimage%20by%20CanoscanFB620S&In-Reply-To=<001201c03127$537a8d80$6425530a@necpcuser>">sane-devel@mostang.com</A>>
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<BR>
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date: 3:15 / 5 / Oct. / 2000
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<BR>
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subject: Re: The problem of xscanimage by CanoscanFB620S
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<BR>
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<P><P><EM>> The bytesperline looks ok if you are doing a color scan of 637 pixels/line
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</EM><BR>
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<EM>> 637*3 = 1911 bytes. There is one byte each for red/green/blue pixel data.
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</EM><BR>
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<EM>> I'm not sure what your other problem could be. Can you scan at any
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</EM><BR>
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<EM>> resolution successfully? How about greyscale scans?
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</EM><BR>
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<EM>> =======================================================
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</EM><BR>
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<EM>> Lawrence Glaister VE7IT email: <A HREF="mailto:lg@jfm.bc.ca?Subject=Re:%20The%20problem%20of%20xscanimage%20by%20CanoscanFB620S&In-Reply-To=<001201c03127$537a8d80$6425530a@necpcuser>">lg@jfm.bc.ca</A>
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</EM><BR>
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<EM>> 1462 Madrona Drive <A HREF="http://jfm.bc.ca">http://jfm.bc.ca</A>
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</EM><BR>
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<EM>> Nanoose Bay BC Canada
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</EM><BR>
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<EM>> V9P 9C9
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</EM><BR>
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<EM>> =======================================================
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</EM><BR>
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<P>Thank you, Mr. Lawrence Glaister !
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<BR>
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I found my thought was wrong as Mr.Abel Deuring gave me a good advice.
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<BR>
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I can't scan at any resolution and the greyscale also scans makes abnormal
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<BR>
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image.
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<BR>
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<P>I changed 'width' and 'length' in canon.c and canon-sane.c as follows.
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<BR>
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<P>width = (SANE_UNFIX(s->val[OPT_BR_X].w - s->val[OPT_TL_X].w) + 0.05)
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<BR>
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* s->hw->info.mud / MM_PER_INCH;
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<BR>
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<P>length = (SANE_UNFIX(s->val[OPT_BR_Y].w - s->val[OPT_TL_Y].w) + 0.05)
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<BR>
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* s->hw->info.mud / MM_PER_INCH;
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<BR>
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<P>This changing resolved a part of the problem.
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<BR>
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The scanimage is not diagonal !
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<BR>
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Thanks to Mr.Abel's help, I could do this.
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<BR>
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<P>But the problem is not resolved completely.
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<BR>
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1. The xscanimage by CanoscanFB620S makes too many long and narrow images.
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<BR>
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2. It makes too much black blank below images.
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<BR>
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3. The top of image is not scanned.
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<BR>
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4. The button 'negative' in xscanimage is disabled.
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<BR>
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<P>I think a reason of the problem(1,2,3) is the following.
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<BR>
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<P>This is a part of a debug-file by the normal xscanimage on Canoscan600(this
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<BR>
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model is supported by canon backend). I have got this file from my friend.
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<BR>
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================================================================
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<BR>
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[canon] >> sane_start
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<BR>
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[canon] >> sane_get_parameters
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<BR>
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[canon] sane_get_parameters: width='5102', xres='37', mud='600'
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<BR>
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[canon] sane_get_parameters: length='6990', yres='37', mud='600'
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<BR>
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[canon] sane_get_parameters: pixels_per_line='314', lines='431'
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<BR>
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[canon] sane_get_parameters: xres='0', yres='0', pixels_per_line='314',
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<BR>
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bytes_per_line='942', lines='431'
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<BR>
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[canon] << sane_get_parameters
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<BR>
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[canon] s->width='5102', s->length='6990'
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<BR>
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[canon] RIF=0, GRC=0, Mirror=0, AE=0
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<BR>
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[canon] HR=255, SR=0, HG=255, SG=0, HB=255, SB=0
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<BR>
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[canon] >> set_window
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<BR>
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[canon] << set_window
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<BR>
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[canon] >> get_window
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<BR>
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[canon] << get_window
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<BR>
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[canon] xres=37
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<BR>
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[canon] yres=37
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<BR>
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[canon] ulx=0
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<BR>
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[canon] uly=0
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<BR>
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[canon] width=5102
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<BR>
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[canon] length=6990
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<BR>
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[canon] >> scan
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<BR>
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[canon] << scan
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<BR>
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[canon] >> get_data_status
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<BR>
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[canon] << get_data_status
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<BR>
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<P>[canon] Magnified Width=942 <=== Look at this number(A) !
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<BR>
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[canon] Magnified Length=431<=== Look at this number(B) !
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<BR>
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<P>[canon] Data=406002 bytes
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<BR>
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[canon] 314 pixels per line, 942 bytes, 431 lines high, total 406002 bytes,
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<BR>
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dpi=37
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<BR>
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[canon] << sane_start
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<BR>
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[canon] >> sane_get_parameters
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<BR>
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[canon] sane_get_parameters: xres='37', yres='37', pixels_per_line='314',
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<BR>
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<P>bytes_per_line='942', <=== Look at this number(A) !
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<BR>
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lines='431' <========== Look at this number(B) !
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<BR>
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<P>[canon] << sane_get_parameters
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<BR>
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[canon] >> sane_set_io_mode
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<BR>
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[canon] << sane_set_io_mode
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<BR>
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[canon] >> sane_read
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<BR>
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[canon] >> read_data
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<BR>
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[canon] << read_data
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<BR>
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=================================================================
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<BR>
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The number of Magnified Width is equal to the number of bytes_per_line.
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<BR>
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The number of Magnified Length is equal to the number of lines.
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<BR>
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<P>The following is a debug-file the abnormal xscanimage on CanoscanFB620S(its
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<BR>
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sane was changed in the way Mr.Abel taught me.)
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<BR>
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=================================================================
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<BR>
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[canon] >> sane_start
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<BR>
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[canon] >> sane_get_parameters
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<BR>
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[canon] sane_get_parameters: width='5104', xres='75', mud='600'
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<BR>
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[canon] sane_get_parameters: length='7016', yres='75', mud='600'
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<BR>
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[canon] sane_get_parameters: pixels_per_line='638', lines='877'
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<BR>
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[canon] sane_get_parameters: xres='0', yres='0', pixels_per_line='638',
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<BR>
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bytes_per_line='1914', lines='877'
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<BR>
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[canon] << sane_get_parameters
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<BR>
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[sanei_init_debug]: Setting debug level of sanei_scsi to 128.
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<BR>
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[canon] s->width='5104', s->length='7016'
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<BR>
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[canon] RIF=1, GRC=0, Mirror=0, AE=0
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<BR>
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[canon] HR=255, SR=0, HG=255, SG=0, HB=255, SB=0
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<BR>
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[canon] >> set_window
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<BR>
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[sanei_scsi] scsi_req_enter: entered 0x8080e28
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<BR>
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[sanei_scsi] sanei_scsi_req_wait: waiting for 0x8080e28
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<BR>
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[sanei_scsi] sanei_scsi.issue: 0x8080e28
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<BR>
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[sanei_scsi] sanei_scsi_req_wait: read 36 bytes
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<BR>
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[sanei_scsi] sanei_scsi_req_wait: SCSI command complained: Success
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<BR>
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[canon] << set_window
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<BR>
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[canon] >> get_window
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<BR>
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[sanei_scsi] scsi_req_enter: entered 0x8080e28
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<BR>
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[sanei_scsi] sanei_scsi_req_wait: waiting for 0x8080e28
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<BR>
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[sanei_scsi] sanei_scsi.issue: 0x8080e28
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<BR>
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[sanei_scsi] sanei_scsi_req_wait: read 108 bytes
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<BR>
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[canon] << get_window
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<BR>
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[canon] xres=600
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<BR>
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[canon] yres=600
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<BR>
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[canon] ulx=0
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<BR>
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[canon] uly=0
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<BR>
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[canon] width=5104
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<BR>
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[canon] length=7016
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<BR>
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[canon] >> scan
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<BR>
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[sanei_scsi] scsi_req_enter: entered 0x8080e28
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<BR>
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[sanei_scsi] sanei_scsi_req_wait: waiting for 0x8080e28
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<BR>
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[sanei_scsi] sanei_scsi.issue: 0x8080e28
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<BR>
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[sanei_scsi] sanei_scsi_req_wait: read 36 bytes
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<BR>
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[canon] << scan
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<BR>
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[canon] >> get_data_status
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<BR>
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[sanei_scsi] scsi_req_enter: entered 0x8080e28
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<BR>
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[sanei_scsi] sanei_scsi_req_wait: waiting for 0x8080e28
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<BR>
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[sanei_scsi] sanei_scsi.issue: 0x8080e28
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<BR>
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[sanei_scsi] sanei_scsi_req_wait: read 64 bytes
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<BR>
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[canon] << get_data_status
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<BR>
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<P>[canon] Magnified Width=638 <==== Look at this number(A) !
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<BR>
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[canon] Magnified Length=7016 <=== Look at this number(B) !
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<BR>
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<P>[canon] Data=4476208 bytes
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<BR>
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[canon] 638 pixels per line, 1914 bytes, 877 lines high, total 1678578
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<BR>
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bytes, dpi=75
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<BR>
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[canon] << sane_start
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<BR>
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[dll] get_parameters(handle=0x8099990,params=0x80a3318)
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<BR>
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[canon] >> sane_get_parameters
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<BR>
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[canon] sane_get_parameters: xres='75', yres='75', pixels_per_line='638',
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<BR>
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<P>bytes_per_line='1914', <==== Look at this number(not A) !
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<BR>
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lines='877' <============ Look at this number(not B) !
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<BR>
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<P>[canon] << sane_get_parameters
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<BR>
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[dll] set_io_mode(handle=0x8099990,nonblocking=1)
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<BR>
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[canon] >> sane_set_io_mode
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<BR>
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[canon] << sane_set_io_mode
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<BR>
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[dll] read(handle=0x8099990,data=0xbfffcc1c,maxlen=8192,lenp=0xbfffcc18)
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<BR>
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[canon] >> sane_read
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<BR>
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[canon] >> read_data
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<BR>
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==================================================================
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<BR>
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I think the number of 'Magnified Width' must be equal to the number of
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<BR>
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'bytes_per_line' and
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<BR>
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the number of 'Magnified Length' must be equal to the number of 'lines'.
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<BR>
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I think a part to change is a source of 'Magnified Width or Length' and the
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<BR>
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source is the function
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<BR>
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of 'get_data_status' in "canon-scsi.c".
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<BR>
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But I don't know the meaning of cmd[0],cmd[1].....cmd[n].
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<BR>
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What does change, when I change the number of cmd[n] ?
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<BR>
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<P>Mitsuru Okaniwa
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<BR>
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<P><P><P><P><P><P><PRE>
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--
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Source code, list archive, and docs: <A HREF="http://www.mostang.com/sane/">http://www.mostang.com/sane/</A>
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To unsubscribe: echo unsubscribe sane-devel | mail <A HREF="mailto:majordomo@mostang.com?Subject=Re:%20The%20problem%20of%20xscanimage%20by%20CanoscanFB620S&In-Reply-To=<001201c03127$537a8d80$6425530a@necpcuser>">majordomo@mostang.com</A>
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</PRE>
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<!-- next="start" -->
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<LI><STRONG>Next message:</STRONG> <A HREF="0074.html">Lawrence Glaister: "Re: [SnapScan] color problem 300dpi"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0072.html">Steve Underwood: "Re: [SnapScan] color problem 300dpi"</A>
|
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<LI><STRONG>In reply to:</STRONG> <A HREF="0047.html">Lawrence Glaister: "Re: The problem of xscanimage by CanoscanFB620S"</A>
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<EM>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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