{
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  "document": {
    "abbrevTitle": "J SMPE",
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      "note": "Parsed from journal_metadata XML (_source/SMPTE/APTARA/DL Project Files/07082015 BACKFILE FOR JOURNAL AND CONFERENCES/smptej_33_12/MIJR15Vol33No12.xml)",
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    "abstract": "Some problems involved in the production of satisfactory three-dimensional motion pictures have not received much mention in the literature dealing with stereoscopy. Their practical solution has contributed marked improvements to the three-dimensional picture of today. The fundamental problem in projecting three-dimensional pictures is that of providing a “right-eye” picture that will reach only the right eye and be prevented from reaching the left eye, and to do the same for the “left-eye” picture. To attain this result two methods have been employed with success, namely: the “anaglyph” in which substantially complementary colors are employed in the viewing devices, and polarized light. The screen surface upon which three-dimensional pictures are projected by polarization methods is of extreme importance. The selection of the proper type of screen raises real problems but these also have been overcome in a practical way.",
    "abstract$meta": {
      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01258.xml)",
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    "articleType": "research-article",
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      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01258.xml)",
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      "version": "smpte-journal-article-nlm@v1"
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    "authors": [
      "J. A. Norling"
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      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01258.xml)",
      "source": "parsed",
      "updated": "2026-05-22T18:56:53.245Z",
      "version": "smpte-journal-article-nlm@v1"
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    "copyright": {
      "holder": "Society of Motion Picture and Television Engineers, Inc.",
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        "confidence": "high",
        "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01258.xml)",
        "source": "parsed",
        "updated": "2026-05-22T18:56:53.245Z",
        "version": "smpte-journal-article-nlm@v1"
      },
      "year": "1939",
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        "confidence": "high",
        "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01258.xml)",
        "source": "parsed",
        "updated": "2026-05-22T18:56:53.245Z",
        "version": "smpte-journal-article-nlm@v1"
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      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01258.xml)",
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      "updated": "2026-05-22T18:56:53.245Z",
      "version": "smpte-journal-article-nlm@v1"
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    "docId": "10.5594-J01258",
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      "note": "Derived from DOI 10.5594/J01258",
      "source": "parsed",
      "updated": "2026-05-22T18:56:53.245Z",
      "version": "smpte-journal-article-nlm@v1"
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    "docLabel": "Journal of the Society of Motion Picture Engineers ( Volume: 33, Issue: 12, December 1939)",
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      "confidence": "medium",
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    "docTitle": "Three-Dimensional Motion Pictures",
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      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01258.xml)",
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      "updated": "2026-05-22T18:56:53.245Z",
      "version": "smpte-journal-article-nlm@v1"
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      "note": "NLM <article> — SMPTE journal paper",
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      "updated": "2026-05-22T18:56:53.245Z",
      "version": "smpte-journal-article-nlm@v1"
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    "doi": "10.5594/J01258",
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      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01258.xml)",
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      "updated": "2026-05-22T18:56:53.245Z",
      "version": "smpte-journal-article-nlm@v1"
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    "href": "https://doi.org/10.5594/J01258",
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      "confidence": "high",
      "note": "Constructed from DOI 10.5594/J01258",
      "source": "inferred",
      "updated": "2026-05-22T18:56:53.245Z",
      "version": "smpte-journal-article-nlm@v1"
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    "issn": {
      "print": "0097-5834",
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        "confidence": "high",
        "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01258.xml)",
        "source": "parsed",
        "updated": "2026-05-22T18:56:53.245Z",
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    "issn$meta": {
      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01258.xml)",
      "source": "parsed",
      "updated": "2026-05-22T18:56:53.245Z",
      "version": "smpte-journal-article-nlm@v1"
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    "journalAcronym": "MIJR",
    "journalAcronym$meta": {
      "confidence": "high",
      "note": "Parsed from journal_metadata XML (_source/SMPTE/APTARA/DL Project Files/07082015 BACKFILE FOR JOURNAL AND CONFERENCES/smptej_33_12/MIJR15Vol33No12.xml)",
      "source": "parsed",
      "updated": "2026-06-16T00:32:03.060Z",
      "version": "smpte-journal-issue-xml@v1"
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    "number": "12",
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      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01258.xml)",
      "source": "parsed",
      "updated": "2026-05-22T18:56:53.245Z",
      "version": "smpte-journal-article-nlm@v1"
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    "pages": "612–634",
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      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01258.xml)",
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      "updated": "2026-05-22T18:56:53.245Z",
      "version": "smpte-journal-article-nlm@v1"
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    "publicationDate": "1939-12-01",
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      "confidence": "high",
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      "source": "parsed",
      "updated": "2026-05-22T18:56:53.245Z",
      "version": "smpte-journal-article-nlm@v1"
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    "publisher": "SMPTE",
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      "confidence": "high",
      "note": "Normalised to registry \"SMPTE\" convention from NLM publisher-name (The Society of Motion Picture and Television Engineers)",
      "source": "inferred",
      "updated": "2026-05-22T18:56:53.245Z",
      "version": "smpte-journal-article-nlm@v1"
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        "confidence": "high",
        "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01258.xml)",
        "source": "parsed",
        "updated": "2026-05-22T18:56:53.245Z",
        "version": "smpte-journal-article-nlm@v1"
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      "country": "USA",
      "country$meta": {
        "confidence": "high",
        "note": "Parsed from journal_metadata XML (_source/SMPTE/APTARA/DL Project Files/07082015 BACKFILE FOR JOURNAL AND CONFERENCES/smptej_33_12/MIJR15Vol33No12.xml)",
        "source": "parsed",
        "updated": "2026-06-16T00:32:03.060Z",
        "version": "smpte-journal-issue-xml@v1"
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      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01258.xml)",
      "source": "parsed",
      "updated": "2026-05-22T18:56:53.245Z",
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        "confidence": "medium",
        "note": "No explicit status in NLM source — journal articles default active",
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        "updated": "2026-05-22T18:56:53.245Z",
        "version": "smpte-journal-article-nlm@v1"
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    "volume": "33",
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      "confidence": "high",
      "note": "Parsed from NLM article XML (_source/SMPTE/HIGHWIRE/Source Bak/smptej/10.5594_J01258.xml)",
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